diff --git a/Source/Modules/CMakeBuildUtilities.cmake b/Source/Modules/CMakeBuildUtilities.cmake
index f5ebc21b31..555d8362df 100644
--- a/Source/Modules/CMakeBuildUtilities.cmake
+++ b/Source/Modules/CMakeBuildUtilities.cmake
@@ -297,6 +297,7 @@ else()
   set(ENABLE_TEST OFF)
   set(ENABLE_COVERAGE OFF)
   set(ENABLE_INSTALL OFF)
+  set(MSVC_USE_STATIC_CRT OFF)
   set(POSIX_REGEX_LIB "" CACHE INTERNAL "libarchive: No POSIX regular expression support")
   set(ENABLE_SAFESEH "" CACHE INTERNAL "libarchive: No /SAFESEH linker flag")
   set(WINDOWS_VERSION "WIN7" CACHE INTERNAL "libarchive: Set Windows version to use (Windows only)")
diff --git a/Tests/RunCMake/CommandLineTar/pax-zstd.cmake b/Tests/RunCMake/CommandLineTar/pax-zstd.cmake
index c2a304d809..323b93a698 100644
--- a/Tests/RunCMake/CommandLineTar/pax-zstd.cmake
+++ b/Tests/RunCMake/CommandLineTar/pax-zstd.cmake
@@ -7,4 +7,5 @@ set(DECOMPRESSION_FLAGS xvf)
 
 include(${CMAKE_CURRENT_LIST_DIR}/roundtrip.cmake)
 
-check_magic("28b52ffd0058" LIMIT 6 HEX)
+# libarchive 3.8.2 enables a checksum feature; older versions do not.
+check_magic("^28b52ffd0[04]58$" LIMIT 6 HEX)
diff --git a/Tests/RunCMake/CommandLineTar/roundtrip.cmake b/Tests/RunCMake/CommandLineTar/roundtrip.cmake
index fa63d1240d..a6311ea6f6 100644
--- a/Tests/RunCMake/CommandLineTar/roundtrip.cmake
+++ b/Tests/RunCMake/CommandLineTar/roundtrip.cmake
@@ -86,6 +86,10 @@ function(check_magic EXPECTED)
     ${ARGN}
   )
 
+  if(EXPECTED MATCHES "[^0-9a-f]" AND ACTUAL MATCHES "${EXPECTED}")
+    return()
+  endif()
+
   if(NOT ACTUAL STREQUAL EXPECTED)
     message(FATAL_ERROR
       "Actual [${ACTUAL}] does not match expected [${EXPECTED}]")
diff --git a/Tests/RunCMake/File_Archive/pax-zstd.cmake b/Tests/RunCMake/File_Archive/pax-zstd.cmake
index ba3036ead9..c52e21c67c 100644
--- a/Tests/RunCMake/File_Archive/pax-zstd.cmake
+++ b/Tests/RunCMake/File_Archive/pax-zstd.cmake
@@ -5,4 +5,5 @@ set(COMPRESSION_TYPE Zstd)
 
 include(${CMAKE_CURRENT_LIST_DIR}/roundtrip.cmake)
 
-check_magic("28b52ffd0058" LIMIT 6 HEX)
+# libarchive 3.8.2 enables a checksum feature; older versions do not.
+check_magic("^28b52ffd0[04]58$" LIMIT 6 HEX)
diff --git a/Tests/RunCMake/File_Archive/roundtrip.cmake b/Tests/RunCMake/File_Archive/roundtrip.cmake
index bb9b25b34f..fa6c841dbd 100644
--- a/Tests/RunCMake/File_Archive/roundtrip.cmake
+++ b/Tests/RunCMake/File_Archive/roundtrip.cmake
@@ -86,6 +86,10 @@ function(check_magic EXPECTED)
     ${ARGN}
   )
 
+  if(EXPECTED MATCHES "[^0-9a-f]" AND ACTUAL MATCHES "${EXPECTED}")
+    return()
+  endif()
+
   if(NOT ACTUAL STREQUAL EXPECTED)
     message(FATAL_ERROR
       "Actual [${ACTUAL}] does not match expected [${EXPECTED}]")
diff --git a/Utilities/Scripts/update-libarchive.bash b/Utilities/Scripts/update-libarchive.bash
index 0e12bbd304..c313561be6 100755
--- a/Utilities/Scripts/update-libarchive.bash
+++ b/Utilities/Scripts/update-libarchive.bash
@@ -8,7 +8,7 @@ readonly name="LibArchive"
 readonly ownership="LibArchive Upstream <libarchive-discuss@googlegroups.com>"
 readonly subtree="Utilities/cmlibarchive"
 readonly repo="https://github.com/libarchive/libarchive.git"
-readonly tag="v3.8.1"
+readonly tag="v3.8.2"
 readonly shortlog=false
 readonly exact_tree_match=false
 readonly paths="
diff --git a/Utilities/cmThirdPartyChecks.cmake b/Utilities/cmThirdPartyChecks.cmake
index a316b6b95a..aa7e8d6a2e 100644
--- a/Utilities/cmThirdPartyChecks.cmake
+++ b/Utilities/cmThirdPartyChecks.cmake
@@ -41,6 +41,8 @@ if(WIN32)
   set(HAVE_CHFLAGS 0)
   set(HAVE_CHOWN 0)
   set(HAVE_CHROOT 0)
+  set(HAVE_CLOSEFROM 0)
+  set(HAVE_CLOSE_RANGE 0)
   set(HAVE_COPYFILE_H 0)
   set(HAVE_CRYPTO_H 0)
   set(HAVE_CTIME_R 0)
@@ -81,6 +83,7 @@ if(WIN32)
   set(HAVE_FUTIMES 0)
   set(HAVE_FUTIMESAT 0)
   set(HAVE_GETADDRINFO 1)
+  set(HAVE_GETEGID 0)
   set(HAVE_GETEUID 0)
   set(HAVE_GETGRGID_R 0)
   set(HAVE_GETGRNAM_R 0)
@@ -94,6 +97,8 @@ if(WIN32)
   set(HAVE_GETPWNAM_R 0)
   set(HAVE_GETPWUID_R 0)
   set(HAVE_GETRANDOM 0)
+  set(HAVE_GETRESGID 0)
+  set(HAVE_GETRESUID 0)
   set(HAVE_GETRLIMIT 0)
   set(HAVE_GETSOCKNAME 1)
   set(HAVE_GETVFSBYNAME 0)
@@ -114,6 +119,7 @@ if(WIN32)
   set(HAVE_IOCTLSOCKET_CAMEL_FIONBIO 1)
   set(HAVE_IOCTLSOCKET_FIONBIO 1)
   set(HAVE_IO_H 1)
+  set(HAVE_ISSETUGID 0)
   set(HAVE_KRB_H 0)
   set(HAVE_LANGINFO_H 0)
   set(HAVE_LCHFLAGS 0)
diff --git a/Utilities/cmlibarchive/CMakeLists.txt b/Utilities/cmlibarchive/CMakeLists.txt
index 06c4e2c8a2..3c993601eb 100644
--- a/Utilities/cmlibarchive/CMakeLists.txt
+++ b/Utilities/cmlibarchive/CMakeLists.txt
@@ -5,6 +5,11 @@ ENDIF()
 
 PROJECT(libarchive C)
 #
+if(0) # XXX(cmake): not needed for build within cmake
+# Include standard installation directories
+include(GNUInstallDirs)
+endif() # XXX(cmake): end
+#
 SET(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/build/cmake")
 if(NOT CMAKE_RUNTIME_OUTPUT_DIRECTORY)
   set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${libarchive_BINARY_DIR}/bin)
@@ -282,6 +287,10 @@ OPTION(ENABLE_TEST "Enable unit and regression tests" ON)
 OPTION(ENABLE_COVERAGE "Enable code coverage (GCC only, automatically sets ENABLE_TEST to ON)" FALSE)
 OPTION(ENABLE_INSTALL "Enable installing of libraries" ON)
 
+IF(WIN32 AND MSVC)
+  OPTION(MSVC_USE_STATIC_CRT "Use static CRT" OFF)
+ENDIF()
+
 SET(POSIX_REGEX_LIB "AUTO" CACHE STRING "Choose what library should provide POSIX regular expression support")
 SET(ENABLE_SAFESEH "AUTO" CACHE STRING "Enable use of /SAFESEH linker flag (MSVC only)")
 SET(WINDOWS_VERSION "WIN10" CACHE STRING "Set Windows version to use (Windows only)")
@@ -1502,6 +1511,8 @@ CHECK_FUNCTION_EXISTS_GLIBC(arc4random_buf HAVE_ARC4RANDOM_BUF)
 CHECK_FUNCTION_EXISTS_GLIBC(chflags HAVE_CHFLAGS)
 CHECK_FUNCTION_EXISTS_GLIBC(chown HAVE_CHOWN)
 CHECK_FUNCTION_EXISTS_GLIBC(chroot HAVE_CHROOT)
+CHECK_FUNCTION_EXISTS_GLIBC(closefrom HAVE_CLOSEFROM)
+CHECK_FUNCTION_EXISTS_GLIBC(close_range HAVE_CLOSE_RANGE)
 CHECK_FUNCTION_EXISTS_GLIBC(ctime_r HAVE_CTIME_R)
 CHECK_FUNCTION_EXISTS_GLIBC(fchdir HAVE_FCHDIR)
 CHECK_FUNCTION_EXISTS_GLIBC(fchflags HAVE_FCHFLAGS)
@@ -1519,15 +1530,19 @@ CHECK_FUNCTION_EXISTS_GLIBC(ftruncate HAVE_FTRUNCATE)
 CHECK_FUNCTION_EXISTS_GLIBC(futimens HAVE_FUTIMENS)
 CHECK_FUNCTION_EXISTS_GLIBC(futimes HAVE_FUTIMES)
 CHECK_FUNCTION_EXISTS_GLIBC(futimesat HAVE_FUTIMESAT)
+CHECK_FUNCTION_EXISTS_GLIBC(getegid HAVE_GETEGID)
 CHECK_FUNCTION_EXISTS_GLIBC(geteuid HAVE_GETEUID)
 CHECK_FUNCTION_EXISTS_GLIBC(getgrgid_r HAVE_GETGRGID_R)
 CHECK_FUNCTION_EXISTS_GLIBC(getgrnam_r HAVE_GETGRNAM_R)
 CHECK_FUNCTION_EXISTS_GLIBC(getline HAVE_GETLINE)
+CHECK_FUNCTION_EXISTS_GLIBC(getpid HAVE_GETPID)
 CHECK_FUNCTION_EXISTS_GLIBC(getpwnam_r HAVE_GETPWNAM_R)
 CHECK_FUNCTION_EXISTS_GLIBC(getpwuid_r HAVE_GETPWUID_R)
-CHECK_FUNCTION_EXISTS_GLIBC(getpid HAVE_GETPID)
+CHECK_FUNCTION_EXISTS_GLIBC(getresgid HAVE_GETRESGID)
+CHECK_FUNCTION_EXISTS_GLIBC(getresuid HAVE_GETRESUID)
 CHECK_FUNCTION_EXISTS_GLIBC(getvfsbyname HAVE_GETVFSBYNAME)
 CHECK_FUNCTION_EXISTS_GLIBC(gmtime_r HAVE_GMTIME_R)
+CHECK_FUNCTION_EXISTS_GLIBC(issetugid HAVE_ISSETUGID)
 CHECK_FUNCTION_EXISTS_GLIBC(lchflags HAVE_LCHFLAGS)
 if(NOT CMAKE_C_COMPILER_ID STREQUAL "LCC" OR NOT CMAKE_C_COMPILER_VERSION VERSION_LESS_EQUAL "1.23")
   CHECK_FUNCTION_EXISTS_GLIBC(lchmod HAVE_LCHMOD)
@@ -1611,12 +1626,6 @@ CHECK_C_SOURCE_COMPILES(
   "#include <sys/types.h>\n#include <sys/mount.h>\nint main(void) { struct statfs s; return sizeof(s);}"
   HAVE_STRUCT_STATFS)
 
-# Make sure we have the POSIX version of readdir_r, not the
-# older 2-argument version.
-CHECK_C_SOURCE_COMPILES(
-  "#include <dirent.h>\nint main() {DIR *d = opendir(\".\"); struct dirent e,*r; return readdir_r(d,&e,&r);}"
-  HAVE_READDIR_R)
-
 # dirfd can be either a function or a macro.
 CHECK_C_SOURCE_COMPILES(
   "#include <dirent.h>\nint main() {DIR *d = opendir(\".\"); return dirfd(d);}"
diff --git a/Utilities/cmlibarchive/build/cmake/config.h.in b/Utilities/cmlibarchive/build/cmake/config.h.in
index 6bc5930f55..9530dd8209 100644
--- a/Utilities/cmlibarchive/build/cmake/config.h.in
+++ b/Utilities/cmlibarchive/build/cmake/config.h.in
@@ -236,6 +236,12 @@
 /* Define to 1 if you have the `chroot' function. */
 #cmakedefine HAVE_CHROOT 1
 
+/* Define to 1 if you have the `closefrom' function. */
+#cmakedefine HAVE_CLOSEFROM 1
+
+/* Define to 1 if you have the `close_range' function. */
+#cmakedefine HAVE_CLOSE_RANGE 1
+
 /* Define to 1 if you have the <copyfile.h> header file. */
 #cmakedefine HAVE_COPYFILE_H 1
 
@@ -754,9 +760,6 @@
 /* Define to 1 if you have the <pwd.h> header file. */
 #cmakedefine HAVE_PWD_H 1
 
-/* Define to 1 if you have the `readdir_r' function. */
-#cmakedefine HAVE_READDIR_R 1
-
 /* Define to 1 if you have the `readlink' function. */
 #cmakedefine HAVE_READLINK 1
 
diff --git a/Utilities/cmlibarchive/build/version b/Utilities/cmlibarchive/build/version
index f08c8c42bf..4c388c39c7 100644
--- a/Utilities/cmlibarchive/build/version
+++ b/Utilities/cmlibarchive/build/version
@@ -1 +1 @@
-3008001
+3008002
diff --git a/Utilities/cmlibarchive/libarchive/CMakeLists.txt b/Utilities/cmlibarchive/libarchive/CMakeLists.txt
index 54b16d1f5e..ec6a3f9558 100644
--- a/Utilities/cmlibarchive/libarchive/CMakeLists.txt
+++ b/Utilities/cmlibarchive/libarchive/CMakeLists.txt
@@ -52,6 +52,7 @@ SET(libarchive_SOURCES
   archive_pathmatch.h
   archive_platform.h
   archive_platform_acl.h
+  archive_platform_stat.h
   archive_platform_xattr.h
   archive_ppmd_private.h
   archive_ppmd8.c
@@ -262,6 +263,9 @@ IF(BUILD_SHARED_LIBS)
                         SOVERSION ${SOVERSION}
                         MACHO_COMPATIBILITY_VERSION ${MACHO_COMPATIBILITY_VERSION}
                         MACHO_CURRENT_VERSION ${MACHO_CURRENT_VERSION})
+  IF(WIN32 AND MSVC AND MSVC_USE_STATIC_CRT)
+    SET_PROPERTY(TARGET archive PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+  ENDIF(WIN32 AND MSVC AND MSVC_USE_STATIC_CRT)
 ENDIF(BUILD_SHARED_LIBS)
 
 # archive_static is a static library
@@ -270,15 +274,14 @@ TARGET_INCLUDE_DIRECTORIES(archive_static PUBLIC .)
 TARGET_LINK_LIBRARIES(archive_static ${ADDITIONAL_LIBS})
 SET_TARGET_PROPERTIES(archive_static PROPERTIES COMPILE_DEFINITIONS
   LIBARCHIVE_STATIC)
+IF(WIN32 AND MSVC AND MSVC_USE_STATIC_CRT)
+  SET_PROPERTY(TARGET archive_static PROPERTY MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
+ENDIF(WIN32 AND MSVC AND MSVC_USE_STATIC_CRT)
 # On Posix systems, libarchive.so and libarchive.a can co-exist.
 IF(NOT WIN32 OR CYGWIN OR NOT BUILD_SHARED_LIBS)
   SET_TARGET_PROPERTIES(archive_static PROPERTIES OUTPUT_NAME archive)
 ENDIF(NOT WIN32 OR CYGWIN OR NOT BUILD_SHARED_LIBS)
 
-if(NOT DEFINED CMAKE_INSTALL_LIBDIR)
-    set(CMAKE_INSTALL_LIBDIR "lib")
-endif()
-
 IF(ENABLE_INSTALL)
   # How to install the libraries
   IF(BUILD_SHARED_LIBS)
diff --git a/Utilities/cmlibarchive/libarchive/archive.h b/Utilities/cmlibarchive/libarchive/archive.h
index a8b4cffeba..1a892845a3 100644
--- a/Utilities/cmlibarchive/libarchive/archive.h
+++ b/Utilities/cmlibarchive/libarchive/archive.h
@@ -34,7 +34,7 @@
  * assert that ARCHIVE_VERSION_NUMBER >= 2012108.
  */
 /* Note: Compiler will complain if this does not match archive_entry.h! */
-#define	ARCHIVE_VERSION_NUMBER 3008001
+#define	ARCHIVE_VERSION_NUMBER 3008002
 
 #include <sys/stat.h>
 #include <stddef.h>  /* for wchar_t */
@@ -174,7 +174,7 @@ __LA_DECL int		archive_version_number(void);
 /*
  * Textual name/version of the library, useful for version displays.
  */
-#define	ARCHIVE_VERSION_ONLY_STRING "3.8.1"
+#define	ARCHIVE_VERSION_ONLY_STRING "3.8.2"
 #define	ARCHIVE_VERSION_STRING "libarchive " ARCHIVE_VERSION_ONLY_STRING
 __LA_DECL const char *	archive_version_string(void);
 
diff --git a/Utilities/cmlibarchive/libarchive/archive_acl.c b/Utilities/cmlibarchive/libarchive/archive_acl.c
index 3124688b69..4ee8055c04 100644
--- a/Utilities/cmlibarchive/libarchive/archive_acl.c
+++ b/Utilities/cmlibarchive/libarchive/archive_acl.c
@@ -274,6 +274,19 @@ acl_new_entry(struct archive_acl *acl,
 {
 	struct archive_acl_entry *ap, *aq;
 
+	/* Reject an invalid type */
+	switch (type) {
+	case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:
+	case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:
+	case ARCHIVE_ENTRY_ACL_TYPE_ALLOW:
+	case ARCHIVE_ENTRY_ACL_TYPE_DENY:
+	case ARCHIVE_ENTRY_ACL_TYPE_AUDIT:
+	case ARCHIVE_ENTRY_ACL_TYPE_ALARM:
+		break;
+	default:
+		return (NULL);
+	}
+
 	/* Type argument must be a valid NFS4 or POSIX.1e type.
 	 * The type must agree with anything already set and
 	 * the permset must be compatible. */
@@ -826,6 +839,9 @@ append_entry_w(wchar_t **wp, const wchar_t *prefix, int type,
 		wname = NULL;
 		id = -1;
 		break;
+	default:
+		**wp = '\0';
+		break;
 	}
 	*wp += wcslen(*wp);
 	*(*wp)++ = L':';
@@ -882,6 +898,7 @@ append_entry_w(wchar_t **wp, const wchar_t *prefix, int type,
 			wcscpy(*wp, L"alarm");
 			break;
 		default:
+			*(*wp) = L'\0';
 			break;
 		}
 		*wp += wcslen(*wp);
@@ -1061,6 +1078,9 @@ append_entry(char **p, const char *prefix, int type,
 		name = NULL;
 		id = -1;
 		break;
+	default:
+		**p = '\0';
+		break;
 	}
 	*p += strlen(*p);
 	*(*p)++ = ':';
@@ -1116,6 +1136,9 @@ append_entry(char **p, const char *prefix, int type,
 		case ARCHIVE_ENTRY_ACL_TYPE_ALARM:
 			strcpy(*p, "alarm");
 			break;
+		default:
+			*(*p) = '\0';
+			break;
 		}
 		*p += strlen(*p);
 	}
diff --git a/Utilities/cmlibarchive/libarchive/archive_check_magic.c b/Utilities/cmlibarchive/libarchive/archive_check_magic.c
index d12f0c496e..6b8e0c5595 100644
--- a/Utilities/cmlibarchive/libarchive/archive_check_magic.c
+++ b/Utilities/cmlibarchive/libarchive/archive_check_magic.c
@@ -30,6 +30,7 @@
 #endif
 
 #include <stdio.h>
+#include <errno.h>
 #ifdef HAVE_STDLIB_H
 #include <stdlib.h>
 #endif
@@ -54,8 +55,14 @@ errmsg(const char *m)
 
 	while (s > 0) {
 		written = write(2, m, s);
-		if (written <= 0)
+		if (written == 0)
 			return;
+		if (written < 0)
+		{
+			if (errno == EINTR)
+				continue;
+			return;
+		}
 		m += written;
 		s -= written;
 	}
diff --git a/Utilities/cmlibarchive/libarchive/archive_cryptor.c b/Utilities/cmlibarchive/libarchive/archive_cryptor.c
index 1825af4dc5..9f03f9ca6d 100644
--- a/Utilities/cmlibarchive/libarchive/archive_cryptor.c
+++ b/Utilities/cmlibarchive/libarchive/archive_cryptor.c
@@ -151,7 +151,7 @@ pbkdf2_sha1(const char *pw, size_t pw_len, const uint8_t *salt,
 	(void)rounds; /* UNUSED */
 	(void)derived_key; /* UNUSED */
 	(void)derived_key_len; /* UNUSED */
-	return -1; /* UNSUPPORTED */
+	return CRYPTOR_STUB_FUNCTION; /* UNSUPPORTED */
 }
 
 #endif
@@ -439,14 +439,14 @@ aes_ctr_init(archive_crypto_ctx *ctx, const uint8_t *key, size_t key_len)
 	(void)ctx; /* UNUSED */
 	(void)key; /* UNUSED */
 	(void)key_len; /* UNUSED */
-	return -1;
+	return CRYPTOR_STUB_FUNCTION;
 }
 
 static int
 aes_ctr_encrypt_counter(archive_crypto_ctx *ctx)
 {
 	(void)ctx; /* UNUSED */
-	return -1;
+	return CRYPTOR_STUB_FUNCTION;
 }
 
 static int
@@ -469,7 +469,7 @@ aes_ctr_update(archive_crypto_ctx *ctx, const uint8_t * const in,
 	(void)out; /* UNUSED */
 	(void)out_len; /* UNUSED */
 	aes_ctr_encrypt_counter(ctx); /* UNUSED */ /* Fix unused function warning */
-	return -1;
+	return CRYPTOR_STUB_FUNCTION;
 }
 
 #else
diff --git a/Utilities/cmlibarchive/libarchive/archive_cryptor_private.h b/Utilities/cmlibarchive/libarchive/archive_cryptor_private.h
index 4b3c6c1614..1dbc5c17a0 100644
--- a/Utilities/cmlibarchive/libarchive/archive_cryptor_private.h
+++ b/Utilities/cmlibarchive/libarchive/archive_cryptor_private.h
@@ -43,7 +43,7 @@ int __libarchive_cryptor_build_hack(void);
 #ifdef __APPLE__
 # include <AvailabilityMacros.h>
 # if MAC_OS_X_VERSION_MAX_ALLOWED >= 1080
-#  define ARCHIVE_CRYPTOR_USE_Apple_CommonCrypto
+#  define ARCHIVE_CRYPTOR_USE_Apple_CommonCrypto 1
 # endif
 #endif
 
@@ -144,9 +144,15 @@ typedef struct {
 
 #else
 
+#if defined(ARCHIVE_CRYPTO_MD5_WIN)    ||\
+	defined(ARCHIVE_CRYPTO_SHA1_WIN)   ||\
+	defined(ARCHIVE_CRYPTO_SHA256_WIN) ||\
+	defined(ARCHIVE_CRYPTO_SHA384_WIN) ||\
+	defined(ARCHIVE_CRYPTO_SHA512_WIN)
 #if defined(_WIN32) && !defined(__CYGWIN__) && !(defined(HAVE_BCRYPT_H) && _WIN32_WINNT >= _WIN32_WINNT_VISTA)
 #define ARCHIVE_CRYPTOR_USE_WINCRYPT 1
 #endif
+#endif
 
 #define AES_BLOCK_SIZE	16
 #define AES_MAX_KEY_SIZE 32
@@ -172,6 +178,9 @@ typedef int archive_crypto_ctx;
 #define archive_encrypto_aes_ctr_release(ctx) \
   __archive_cryptor.encrypto_aes_ctr_release(ctx)
 
+/* Stub return value if no encryption support exists. */
+#define CRYPTOR_STUB_FUNCTION	-2
+
 /* Minimal interface to cryptographic functionality for internal use in
  * libarchive */
 struct archive_cryptor
diff --git a/Utilities/cmlibarchive/libarchive/archive_entry.h b/Utilities/cmlibarchive/libarchive/archive_entry.h
index f71a66a1f2..d58f5401d9 100644
--- a/Utilities/cmlibarchive/libarchive/archive_entry.h
+++ b/Utilities/cmlibarchive/libarchive/archive_entry.h
@@ -28,7 +28,7 @@
 #define	ARCHIVE_ENTRY_H_INCLUDED
 
 /* Note: Compiler will complain if this does not match archive.h! */
-#define	ARCHIVE_VERSION_NUMBER 3008001
+#define	ARCHIVE_VERSION_NUMBER 3008002
 
 /*
  * Note: archive_entry.h is for use outside of libarchive; the
diff --git a/Utilities/cmlibarchive/libarchive/archive_entry_paths.3 b/Utilities/cmlibarchive/libarchive/archive_entry_paths.3
index 0f849c9ebb..f739b17230 100644
--- a/Utilities/cmlibarchive/libarchive/archive_entry_paths.3
+++ b/Utilities/cmlibarchive/libarchive/archive_entry_paths.3
@@ -64,7 +64,7 @@ Streaming Archive Library (libarchive, -larchive)
 .Ft void
 .Fn archive_entry_copy_hardlink "struct archive_entry *a" "const char *path"
 .Ft void
-.Fn archive_entry_copy_hardlink_w "struct archive_entry *a "const wchar_t *path"
+.Fn archive_entry_copy_hardlink_w "struct archive_entry *a" "const wchar_t *path"
 .Ft int
 .Fn archive_entry_update_hardlink_utf8 "struct archive_entry *a" "const char *path"
 .Ft void
diff --git a/Utilities/cmlibarchive/libarchive/archive_entry_stat.c b/Utilities/cmlibarchive/libarchive/archive_entry_stat.c
index c4906838ed..345d3d29b2 100644
--- a/Utilities/cmlibarchive/libarchive/archive_entry_stat.c
+++ b/Utilities/cmlibarchive/libarchive/archive_entry_stat.c
@@ -38,6 +38,7 @@
 const struct stat *
 archive_entry_stat(struct archive_entry *entry)
 {
+	int64_t size;
 	struct stat *st;
 	if (entry->stat == NULL) {
 		entry->stat = calloc(1, sizeof(*st));
@@ -74,7 +75,10 @@ archive_entry_stat(struct archive_entry *entry)
 	st->st_ino = (ino_t)archive_entry_ino64(entry);
 	st->st_nlink = archive_entry_nlink(entry);
 	st->st_rdev = archive_entry_rdev(entry);
-	st->st_size = (off_t)archive_entry_size(entry);
+	size = archive_entry_size(entry);
+	st->st_size = (off_t)size;
+	if (st->st_size < 0 || (int64_t)st->st_size != size)
+		st->st_size = 0;
 	st->st_mode = archive_entry_mode(entry);
 
 	/*
diff --git a/Utilities/cmlibarchive/libarchive/archive_platform.h b/Utilities/cmlibarchive/libarchive/archive_platform.h
index 625d2e7818..711671f99f 100644
--- a/Utilities/cmlibarchive/libarchive/archive_platform.h
+++ b/Utilities/cmlibarchive/libarchive/archive_platform.h
@@ -176,16 +176,6 @@
 #define	CAN_RESTORE_METADATA_FD
 #endif
 
-/*
- * glibc 2.24 deprecates readdir_r
- * bionic c deprecates readdir_r too
- */
-#if defined(HAVE_READDIR_R) && (!defined(__GLIBC__) || !defined(__GLIBC_MINOR__) || __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 24)) && (!defined(__ANDROID__))
-#define	USE_READDIR_R	1
-#else
-#undef	USE_READDIR_R
-#endif
-
 /* Set up defaults for internal error codes. */
 #ifndef ARCHIVE_ERRNO_FILE_FORMAT
 #if HAVE_EFTYPE
diff --git a/Utilities/cmlibarchive/libarchive/archive_platform_stat.h b/Utilities/cmlibarchive/libarchive/archive_platform_stat.h
new file mode 100644
index 0000000000..5432b2f643
--- /dev/null
+++ b/Utilities/cmlibarchive/libarchive/archive_platform_stat.h
@@ -0,0 +1,45 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2025 Tobias Stoeckmann
+ * All rights reserved.
+ */
+
+/* !!ONLY FOR USE INTERNALLY TO LIBARCHIVE!! */
+
+#ifndef ARCHIVE_PLATFORM_STAT_H_INCLUDED
+#define ARCHIVE_PLATFORM_STAT_H_INCLUDED
+
+#ifndef __LIBARCHIVE_BUILD
+#error This header is only to be used internally to libarchive.
+#endif
+
+#if defined(_WIN32) && !defined(__CYGWIN__)
+/* We use _lseeki64() on Windows. */
+typedef int64_t la_seek_t;
+
+struct la_seek_stat {
+	int64_t		st_mtime;
+	ino_t		st_ino;
+	unsigned short	st_mode;
+	uint32_t	st_nlink;
+	gid_t		st_gid;
+	la_seek_t	st_size;
+	uid_t		st_uid;
+	dev_t		st_dev;
+	dev_t		st_rdev;
+};
+typedef struct la_seek_stat la_seek_stat_t;
+
+#define la_seek_fstat(fd, st)	__la_seek_fstat((fd), (st))
+#define la_seek_stat(fd, st)	__la_seek_stat((fd), (st))
+
+#else
+typedef off_t la_seek_t;
+typedef struct stat la_seek_stat_t;
+
+#define la_seek_fstat(fd, st)	fstat((fd), (st))
+#define la_seek_stat(fd, st)	stat((fd), (st))
+#endif
+
+#endif	/* !ARCHIVE_PLATFORM_STAT_H_INCLUDED */
diff --git a/Utilities/cmlibarchive/libarchive/archive_private.h b/Utilities/cmlibarchive/libarchive/archive_private.h
index 050fc63c0b..3a926c6886 100644
--- a/Utilities/cmlibarchive/libarchive/archive_private.h
+++ b/Utilities/cmlibarchive/libarchive/archive_private.h
@@ -158,6 +158,7 @@ int	__archive_check_magic(struct archive *, unsigned int magic,
 __LA_NORETURN void	__archive_errx(int retvalue, const char *msg);
 
 void	__archive_ensure_cloexec_flag(int fd);
+int	__archive_get_tempdir(struct archive_string *);
 int	__archive_mktemp(const char *tmpdir);
 #if defined(_WIN32) && !defined(__CYGWIN__)
 int	__archive_mkstemp(wchar_t *templates);
diff --git a/Utilities/cmlibarchive/libarchive/archive_read.c b/Utilities/cmlibarchive/libarchive/archive_read.c
index 50db870177..c9b9d59815 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read.c
@@ -575,8 +575,7 @@ choose_filters(struct archive_read *a)
 			return (ARCHIVE_OK);
 		}
 
-		filter
-		    = calloc(1, sizeof(*filter));
+		filter = calloc(1, sizeof(*filter));
 		if (filter == NULL)
 			return (ARCHIVE_FATAL);
 		filter->bidder = best_bidder;
@@ -834,7 +833,9 @@ archive_read_data(struct archive *_a, void *buff, size_t s)
 			r = archive_read_data_block(a, &read_buf,
 			    &a->read_data_remaining, &a->read_data_offset);
 			a->read_data_block = read_buf;
-			if (r == ARCHIVE_EOF)
+			if (r == ARCHIVE_EOF &&
+			    a->read_data_offset == a->read_data_output_offset &&
+			    a->read_data_remaining == 0)
 				return (bytes_read);
 			/*
 			 * Error codes are all negative, so the status
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_disk_entry_from_file.c b/Utilities/cmlibarchive/libarchive/archive_read_disk_entry_from_file.c
index 19d049770b..42af4034b0 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_disk_entry_from_file.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_disk_entry_from_file.c
@@ -338,7 +338,7 @@ setup_mac_metadata(struct archive_read_disk *a,
 	int ret = ARCHIVE_OK;
 	void *buff = NULL;
 	int have_attrs;
-	const char *name, *tempdir;
+	const char *name;
 	struct archive_string tempfile;
 
 	(void)fd; /* UNUSED */
@@ -357,13 +357,11 @@ setup_mac_metadata(struct archive_read_disk *a,
 	if (have_attrs == 0)
 		return (ARCHIVE_OK);
 
-	tempdir = NULL;
-	if (issetugid() == 0)
-		tempdir = getenv("TMPDIR");
-	if (tempdir == NULL)
-		tempdir = _PATH_TMP;
 	archive_string_init(&tempfile);
-	archive_strcpy(&tempfile, tempdir);
+	if (__archive_get_tempdir(&tempfile) != ARCHIVE_OK) {
+		ret = ARCHIVE_WARN;
+		goto cleanup;
+	}
 	archive_strcat(&tempfile, "tar.md.XXXXXX");
 	tempfd = mkstemp(tempfile.s);
 	if (tempfd < 0) {
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_disk_posix.c b/Utilities/cmlibarchive/libarchive/archive_read_disk_posix.c
index f8e234c588..12c8225bb6 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_disk_posix.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_disk_posix.c
@@ -172,9 +172,6 @@ struct filesystem {
 	int		synthetic;
 	int		remote;
 	int		noatime;
-#if defined(USE_READDIR_R)
-	size_t		name_max;
-#endif
 	long		incr_xfer_size;
 	long		max_xfer_size;
 	long		min_xfer_size;
@@ -207,10 +204,6 @@ struct tree {
 	DIR			*d;
 #define	INVALID_DIR_HANDLE NULL
 	struct dirent		*de;
-#if defined(USE_READDIR_R)
-	struct dirent		*dirent;
-	size_t			 dirent_allocated;
-#endif
 	int			 flags;
 	int			 visit_type;
 	/* Error code from last failed operation. */
@@ -877,7 +870,7 @@ next_entry(struct archive_read_disk *a, struct tree *t,
 			tree_enter_initial_dir(t);
 			return (ARCHIVE_FATAL);
 		case TREE_ERROR_DIR:
-			archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
+			archive_set_error(&a->archive, t->tree_errno,
 			    "%s: Couldn't visit directory",
 			    tree_current_path(t));
 			tree_enter_initial_dir(t);
@@ -1586,9 +1579,6 @@ setup_current_filesystem(struct archive_read_disk *a)
 #  endif
 #endif
 	int r, xr = 0;
-#if !defined(HAVE_STRUCT_STATFS_F_NAMEMAX)
-	long nm;
-#endif
 
 	t->current_filesystem->synthetic = -1;
 	t->current_filesystem->remote = -1;
@@ -1655,35 +1645,6 @@ setup_current_filesystem(struct archive_read_disk *a)
 #endif
 		t->current_filesystem->noatime = 0;
 
-#if defined(USE_READDIR_R)
-	/* Set maximum filename length. */
-#if defined(HAVE_STRUCT_STATFS_F_NAMEMAX)
-	t->current_filesystem->name_max = sfs.f_namemax;
-#else
-# if defined(_PC_NAME_MAX)
-	/* Mac OS X does not have f_namemax in struct statfs. */
-	if (tree_current_is_symblic_link_target(t)) {
-		if (tree_enter_working_dir(t) != 0) {
-			archive_set_error(&a->archive, errno, "fchdir failed");
-			return (ARCHIVE_FAILED);
-		}
-		nm = pathconf(tree_current_access_path(t), _PC_NAME_MAX);
-	} else
-		nm = fpathconf(tree_current_dir_fd(t), _PC_NAME_MAX);
-# else
-	nm = -1;
-# endif
-	if (nm == -1)
-		t->current_filesystem->name_max = NAME_MAX;
-	else
-		t->current_filesystem->name_max = nm;
-#endif
-	if (t->current_filesystem->name_max == 0) {
-		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
-		    "Cannot determine name_max");
-		return (ARCHIVE_FAILED);
-	}
-#endif /* USE_READDIR_R */
 	return (ARCHIVE_OK);
 }
 
@@ -1871,19 +1832,6 @@ setup_current_filesystem(struct archive_read_disk *a)
 #endif
 		t->current_filesystem->noatime = 0;
 
-#if defined(USE_READDIR_R)
-	/* Set maximum filename length. */
-#if defined(HAVE_STATVFS)
-	t->current_filesystem->name_max = svfs.f_namemax;
-#else
-	t->current_filesystem->name_max = sfs.f_namelen;
-#endif
-	if (t->current_filesystem->name_max == 0) {
-		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
-		    "Cannot determine name_max");
-		return (ARCHIVE_FAILED);
-	}
-#endif
 	return (ARCHIVE_OK);
 }
 
@@ -1961,15 +1909,6 @@ setup_current_filesystem(struct archive_read_disk *a)
 #endif
 		t->current_filesystem->noatime = 0;
 
-#if defined(USE_READDIR_R)
-	/* Set maximum filename length. */
-	t->current_filesystem->name_max = svfs.f_namemax;
-	if (t->current_filesystem->name_max == 0) {
-		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
-		    "Cannot determine name_max");
-		return (ARCHIVE_FAILED);
-	}
-#endif
 	return (ARCHIVE_OK);
 }
 
@@ -1983,9 +1922,6 @@ static int
 setup_current_filesystem(struct archive_read_disk *a)
 {
 	struct tree *t = a->tree;
-#if defined(_PC_NAME_MAX) && defined(USE_READDIR_R)
-	long nm;
-#endif
 	t->current_filesystem->synthetic = -1;/* Not supported */
 	t->current_filesystem->remote = -1;/* Not supported */
 	t->current_filesystem->noatime = 0;
@@ -1995,40 +1931,6 @@ setup_current_filesystem(struct archive_read_disk *a)
 	t->current_filesystem->min_xfer_size = -1;
 	t->current_filesystem->incr_xfer_size = -1;
 
-#if defined(USE_READDIR_R)
-	/* Set maximum filename length. */
-#  if defined(_PC_NAME_MAX)
-	if (tree_current_is_symblic_link_target(t)) {
-		if (tree_enter_working_dir(t) != 0) {
-			archive_set_error(&a->archive, errno, "fchdir failed");
-			return (ARCHIVE_FAILED);
-		}
-		nm = pathconf(tree_current_access_path(t), _PC_NAME_MAX);
-	} else
-		nm = fpathconf(tree_current_dir_fd(t), _PC_NAME_MAX);
-	if (nm == -1)
-#  endif /* _PC_NAME_MAX */
-		/*
-		 * Some systems (HP-UX or others?) incorrectly defined
-		 * NAME_MAX macro to be a smaller value.
-		 */
-#  if defined(NAME_MAX) && NAME_MAX >= 255
-		t->current_filesystem->name_max = NAME_MAX;
-#  else
-		/* No way to get a trusted value of maximum filename
-		 * length. */
-		t->current_filesystem->name_max = PATH_MAX;
-#  endif /* NAME_MAX */
-#  if defined(_PC_NAME_MAX)
-	else
-		t->current_filesystem->name_max = nm;
-#  endif /* _PC_NAME_MAX */
-	if (t->current_filesystem->name_max == 0) {
-		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
-		    "Cannot determine name_max");
-		return (ARCHIVE_FAILED);
-	}
-#endif /* USE_READDIR_R */
 	return (ARCHIVE_OK);
 }
 
@@ -2120,8 +2022,11 @@ tree_dup(int fd)
 	}
 #endif /* F_DUPFD_CLOEXEC */
 	new_fd = dup(fd);
-	__archive_ensure_cloexec_flag(new_fd);
-	return (new_fd);
+	if (new_fd != -1) {
+		__archive_ensure_cloexec_flag(new_fd);
+		return (new_fd);
+	}
+	return (-1);
 }
 
 /*
@@ -2243,11 +2148,16 @@ tree_reopen(struct tree *t, const char *path, int restore_time)
 	 * so try again for execute. The consequences of not opening this are
 	 * unhelpful and unnecessary errors later.
 	 */
-	if (t->initial_dir_fd < 0)
+	if (t->initial_dir_fd < 0) {
 		t->initial_dir_fd = open(".", o_flag | O_CLOEXEC);
+		if (t->initial_dir_fd < 0)
+			return NULL;
+	}
 #endif
 	__archive_ensure_cloexec_flag(t->initial_dir_fd);
 	t->working_dir_fd = tree_dup(t->initial_dir_fd);
+	if (t->working_dir_fd < 0)
+		return NULL;
 	return (t);
 }
 
@@ -2460,12 +2370,11 @@ tree_dir_next_posix(struct tree *t)
 	size_t namelen;
 
 	if (t->d == NULL) {
-#if defined(USE_READDIR_R)
-		size_t dirent_size;
-#endif
 
 #if defined(HAVE_FDOPENDIR)
-		t->d = fdopendir(tree_dup(t->working_dir_fd));
+		int fd = tree_dup(t->working_dir_fd);
+		if (fd != -1)
+			t->d = fdopendir(fd);
 #else /* HAVE_FDOPENDIR */
 		if (tree_enter_working_dir(t) == 0) {
 			t->d = opendir(".");
@@ -2481,45 +2390,12 @@ tree_dir_next_posix(struct tree *t)
 			t->visit_type = r != 0 ? r : TREE_ERROR_DIR;
 			return (t->visit_type);
 		}
-#if defined(USE_READDIR_R)
-		dirent_size = offsetof(struct dirent, d_name) +
-		  t->filesystem_table[t->current->filesystem_id].name_max + 1;
-		if (t->dirent == NULL || t->dirent_allocated < dirent_size) {
-			free(t->dirent);
-			t->dirent = malloc(dirent_size);
-			if (t->dirent == NULL) {
-				closedir(t->d);
-				t->d = INVALID_DIR_HANDLE;
-				(void)tree_ascend(t);
-				tree_pop(t);
-				t->tree_errno = ENOMEM;
-				t->visit_type = TREE_ERROR_DIR;
-				return (t->visit_type);
-			}
-			t->dirent_allocated = dirent_size;
-		}
-#endif /* USE_READDIR_R */
 	}
 	for (;;) {
 		errno = 0;
-#if defined(USE_READDIR_R)
-		r = readdir_r(t->d, t->dirent, &t->de);
-#ifdef _AIX
-		/* Note: According to the man page, return value 9 indicates
-		 * that the readdir_r was not successful and the error code
-		 * is set to the global errno variable. And then if the end
-		 * of directory entries was reached, the return value is 9
-		 * and the third parameter is set to NULL and errno is
-		 * unchanged. */
-		if (r == 9)
-			r = errno;
-#endif /* _AIX */
-		if (r != 0 || t->de == NULL) {
-#else
 		t->de = readdir(t->d);
 		if (t->de == NULL) {
 			r = errno;
-#endif
 			closedir(t->d);
 			t->d = INVALID_DIR_HANDLE;
 			if (r != 0) {
@@ -2758,9 +2634,6 @@ tree_free(struct tree *t)
 	if (t == NULL)
 		return;
 	archive_string_free(&t->path);
-#if defined(USE_READDIR_R)
-	free(t->dirent);
-#endif
 	free(t->sparse_list);
 	for (i = 0; i < t->max_filesystem_id; i++)
 		free(t->filesystem_table[i].allocation_ptr);
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_open_fd.c b/Utilities/cmlibarchive/libarchive/archive_read_open_fd.c
index dc7c9e52c6..c85a62a3e2 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_open_fd.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_open_fd.c
@@ -48,6 +48,7 @@
 #endif
 
 #include "archive.h"
+#include "archive_platform_stat.h"
 
 struct read_fd_data {
 	int	 fd;
@@ -65,12 +66,12 @@ static int64_t	file_skip(struct archive *, void *, int64_t request);
 int
 archive_read_open_fd(struct archive *a, int fd, size_t block_size)
 {
-	struct stat st;
+	la_seek_stat_t st;
 	struct read_fd_data *mine;
 	void *b;
 
 	archive_clear_error(a);
-	if (fstat(fd, &st) != 0) {
+	if (la_seek_fstat(fd, &st) != 0) {
 		archive_set_error(a, errno, "Can't stat fd %d", fd);
 		return (ARCHIVE_FATAL);
 	}
@@ -133,7 +134,7 @@ static int64_t
 file_skip(struct archive *a, void *client_data, int64_t request)
 {
 	struct read_fd_data *mine = (struct read_fd_data *)client_data;
-	off_t skip = (off_t)request;
+	la_seek_t skip = (la_seek_t)request;
 	int64_t old_offset, new_offset;
 	int skip_bits = sizeof(skip) * 8 - 1;  /* off_t is a signed type. */
 
@@ -149,7 +150,8 @@ file_skip(struct archive *a, void *client_data, int64_t request)
 	}
 
 	/* Reduce 'skip' to the next smallest multiple of block_size */
-	skip = (off_t)(((int64_t)skip / mine->block_size) * mine->block_size);
+	skip = (la_seek_t)(((int64_t)skip / mine->block_size) * mine->block_size);
+
 	if (skip == 0)
 		return (0);
 
@@ -185,27 +187,28 @@ static int64_t
 file_seek(struct archive *a, void *client_data, int64_t request, int whence)
 {
 	struct read_fd_data *mine = (struct read_fd_data *)client_data;
-	off_t seek = (off_t)request;
+	la_seek_t seek = (la_seek_t)request;
 	int64_t r;
 	int seek_bits = sizeof(seek) * 8 - 1;  /* off_t is a signed type. */
 
 	/* We use off_t here because lseek() is declared that way. */
 
-	/* Reduce a request that would overflow the 'seek' variable. */
+	/* Do not perform a seek which cannot be fulfilled. */
 	if (sizeof(request) > sizeof(seek)) {
 		const int64_t max_seek =
 		    (((int64_t)1 << (seek_bits - 1)) - 1) * 2 + 1;
 		const int64_t min_seek = ~max_seek;
-		if (request > max_seek)
-			seek = (off_t)max_seek;
-		else if (request < min_seek)
-			seek = (off_t)min_seek;
+		if (request < min_seek || request > max_seek) {
+			errno = EOVERFLOW;
+			goto err;
+		}
 	}
 
 	r = lseek(mine->fd, seek, whence);
 	if (r >= 0)
 		return r;
 
+err:
 	if (errno == ESPIPE) {
 		archive_set_error(a, errno,
 		    "A file descriptor(%d) is not seekable(PIPE)", mine->fd);
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_open_file.c b/Utilities/cmlibarchive/libarchive/archive_read_open_file.c
index ede2b4b8c2..ba63969909 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_open_file.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_open_file.c
@@ -48,6 +48,7 @@
 #endif
 
 #include "archive.h"
+#include "archive_platform_stat.h"
 
 struct read_FILE_data {
 	FILE    *f;
@@ -65,7 +66,7 @@ static int64_t	FILE_skip(struct archive *, void *, int64_t);
 int
 archive_read_open_FILE(struct archive *a, FILE *f)
 {
-	struct stat st;
+	la_seek_stat_t st;
 	struct read_FILE_data *mine;
 	size_t block_size = 128 * 1024;
 	void *b;
@@ -88,7 +89,7 @@ archive_read_open_FILE(struct archive *a, FILE *f)
 	 * streams that don't support fileno()).  As a result, fileno()
 	 * should be used cautiously.)
 	 */
-	if (fstat(fileno(mine->f), &st) == 0 && S_ISREG(st.st_mode)) {
+	if (la_seek_fstat(fileno(mine->f), &st) == 0 && S_ISREG(st.st_mode)) {
 		archive_read_extract_set_skip_file(a, st.st_dev, st.st_ino);
 		/* Enable the seek optimization only for regular files. */
 		mine->can_skip = 1;
@@ -205,15 +206,15 @@ FILE_seek(struct archive *a, void *client_data, int64_t request, int whence)
 	int seek_bits = sizeof(seek) * 8 - 1;
 	(void)a; /* UNUSED */
 
-	/* Reduce a request that would overflow the 'seek' variable. */
+	/* Do not perform a seek which cannot be fulfilled. */
 	if (sizeof(request) > sizeof(seek)) {
 		const int64_t max_seek =
 		    (((int64_t)1 << (seek_bits - 1)) - 1) * 2 + 1;
 		const int64_t min_seek = ~max_seek;
-		if (request > max_seek)
-			seek = max_seek;
-		else if (request < min_seek)
-			seek = min_seek;
+		if (request < min_seek || request > max_seek) {
+			errno = EOVERFLOW;
+			goto err;
+		}
 	}
 
 #ifdef __ANDROID__
@@ -236,6 +237,7 @@ FILE_seek(struct archive *a, void *client_data, int64_t request, int whence)
 	}
 #endif
 	/* If we arrive here, the input is corrupted or truncated so fail. */
+err:
 	archive_set_error(a, errno, "Error seeking in FILE* pointer");
 	return (ARCHIVE_FATAL);
 }
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_open_filename.c b/Utilities/cmlibarchive/libarchive/archive_read_open_filename.c
index 5f5b3f1f72..a910eefcbf 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_open_filename.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_open_filename.c
@@ -59,6 +59,7 @@
 #endif
 
 #include "archive.h"
+#include "archive_platform_stat.h"
 #include "archive_private.h"
 #include "archive_string.h"
 
@@ -136,8 +137,10 @@ archive_read_open_filenames(struct archive *a, const char **filenames,
 			mine->filename_type = FNT_STDIN;
 		} else
 			mine->filename_type = FNT_MBS;
-		if (archive_read_append_callback_data(a, mine) != (ARCHIVE_OK))
+		if (archive_read_append_callback_data(a, mine) != (ARCHIVE_OK)) {
+			free(mine);
 			return (ARCHIVE_FATAL);
+		}
 		if (filenames == NULL)
 			break;
 		filename = *(filenames++);
@@ -216,8 +219,10 @@ archive_read_open_filenames_w(struct archive *a, const wchar_t **wfilenames,
 			archive_string_free(&fn);
 #endif
 		}
-		if (archive_read_append_callback_data(a, mine) != (ARCHIVE_OK))
+		if (archive_read_append_callback_data(a, mine) != (ARCHIVE_OK)) {
+			free(mine);
 			return (ARCHIVE_FATAL);
+		}
 		if (wfilenames == NULL)
 			break;
 		wfilename = *(wfilenames++);
@@ -248,7 +253,7 @@ archive_read_open_filename_w(struct archive *a, const wchar_t *wfilename,
 static int
 file_open(struct archive *a, void *client_data)
 {
-	struct stat st;
+	la_seek_stat_t st;
 	struct read_file_data *mine = (struct read_file_data *)client_data;
 	void *buffer;
 	const char *filename = NULL;
@@ -313,7 +318,7 @@ file_open(struct archive *a, void *client_data)
 		goto fail;
 #endif
 	}
-	if (fstat(fd, &st) != 0) {
+	if (la_seek_fstat(fd, &st) != 0) {
 #if defined(_WIN32) && !defined(__CYGWIN__)
 		if (mine->filename_type == FNT_WCS)
 			archive_set_error(a, errno, "Can't stat '%ls'",
@@ -482,10 +487,11 @@ file_skip_lseek(struct archive *a, void *client_data, int64_t request)
 	struct read_file_data *mine = (struct read_file_data *)client_data;
 #if defined(_WIN32) && !defined(__CYGWIN__)
 	/* We use _lseeki64() on Windows. */
-	int64_t old_offset, new_offset, skip = request;
+	int64_t old_offset, new_offset;
 #else
-	off_t old_offset, new_offset, skip = (off_t)request;
+	off_t old_offset, new_offset;
 #endif
+	la_seek_t skip = (la_seek_t)request;
 	int skip_bits = sizeof(skip) * 8 - 1;
 
 	/* We use off_t here because lseek() is declared that way. */
@@ -552,21 +558,21 @@ static int64_t
 file_seek(struct archive *a, void *client_data, int64_t request, int whence)
 {
 	struct read_file_data *mine = (struct read_file_data *)client_data;
-	off_t seek = (off_t)request;
+	la_seek_t seek = (la_seek_t)request;
 	int64_t r;
 	int seek_bits = sizeof(seek) * 8 - 1;
 
 	/* We use off_t here because lseek() is declared that way. */
 
-	/* Reduce a request that would overflow the 'seek' variable. */
+	/* Do not perform a seek which cannot be fulfilled. */
 	if (sizeof(request) > sizeof(seek)) {
 		const int64_t max_seek =
 		    (((int64_t)1 << (seek_bits - 1)) - 1) * 2 + 1;
 		const int64_t min_seek = ~max_seek;
-		if (request > max_seek)
-			seek = (off_t)max_seek;
-		else if (request < min_seek)
-			seek = (off_t)min_seek;
+		if (request < min_seek || request > max_seek) {
+			errno = EOVERFLOW;
+			goto err;
+		}
 	}
 
 	r = lseek(mine->fd, seek, whence);
@@ -574,6 +580,7 @@ file_seek(struct archive *a, void *client_data, int64_t request, int whence)
 		return r;
 
 	/* If the input is corrupted or truncated, fail. */
+err:
 	if (mine->filename_type == FNT_STDIN)
 		archive_set_error(a, errno, "Error seeking in stdin");
 	else if (mine->filename_type == FNT_MBS)
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_set_format.c b/Utilities/cmlibarchive/libarchive/archive_read_set_format.c
index c74361b20c..552ab12d2f 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_set_format.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_set_format.c
@@ -37,7 +37,7 @@ int
 archive_read_set_format(struct archive *_a, int code)
 {
   int r1, r2, slots, i;
-  char str[10];
+  const char *str;
   struct archive_read *a = (struct archive_read *)_a;
 
   if ((r1 = archive_read_support_format_by_code(_a, code)) < (ARCHIVE_OK))
@@ -49,49 +49,49 @@ archive_read_set_format(struct archive *_a, int code)
   switch (code & ARCHIVE_FORMAT_BASE_MASK)
   {
     case ARCHIVE_FORMAT_7ZIP:
-      strcpy(str, "7zip");
+      str = "7zip";
       break;
     case ARCHIVE_FORMAT_AR:
-      strcpy(str, "ar");
+      str = "ar";
       break;
     case ARCHIVE_FORMAT_CAB:
-      strcpy(str, "cab");
+      str = "cab";
       break;
     case ARCHIVE_FORMAT_CPIO:
-      strcpy(str, "cpio");
+      str = "cpio";
       break;
     case ARCHIVE_FORMAT_EMPTY:
-      strcpy(str, "empty");
+      str = "empty";
       break;
     case ARCHIVE_FORMAT_ISO9660:
-      strcpy(str, "iso9660");
+      str = "iso9660";
       break;
     case ARCHIVE_FORMAT_LHA:
-      strcpy(str, "lha");
+      str = "lha";
       break;
     case ARCHIVE_FORMAT_MTREE:
-      strcpy(str, "mtree");
+      str = "mtree";
       break;
     case ARCHIVE_FORMAT_RAR:
-      strcpy(str, "rar");
+      str = "rar";
       break;
     case ARCHIVE_FORMAT_RAR_V5:
-      strcpy(str, "rar5");
+      str = "rar5";
       break;
     case ARCHIVE_FORMAT_RAW:
-      strcpy(str, "raw");
+      str = "raw";
       break;
     case ARCHIVE_FORMAT_TAR:
-      strcpy(str, "tar");
+      str = "tar";
       break;
     case ARCHIVE_FORMAT_WARC:
-      strcpy(str, "warc");
+      str = "warc";
       break;
     case ARCHIVE_FORMAT_XAR:
-      strcpy(str, "xar");
+      str = "xar";
       break;
     case ARCHIVE_FORMAT_ZIP:
-      strcpy(str, "zip");
+      str = "zip";
       break;
     default:
       archive_set_error(&a->archive, ARCHIVE_ERRNO_PROGRAMMER,
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_support_filter_program.c b/Utilities/cmlibarchive/libarchive/archive_read_support_filter_program.c
index 9e825223b2..2c8e45302d 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_support_filter_program.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_support_filter_program.c
@@ -110,7 +110,7 @@ struct program_filter {
 	pid_t		 child;
 #endif
 	int		 exit_status;
-	int		 waitpid_return;
+	pid_t		 waitpid_return;
 	int		 child_stdin, child_stdout;
 
 	char		*out_buf;
@@ -242,16 +242,13 @@ child_stop(struct archive_read_filter *self, struct program_filter *state)
 			state->waitpid_return
 			    = waitpid(state->child, &state->exit_status, 0);
 		} while (state->waitpid_return == -1 && errno == EINTR);
-#if defined(_WIN32) && !defined(__CYGWIN__)
-		CloseHandle(state->child);
-#endif
 		state->child = 0;
 	}
 
 	if (state->waitpid_return < 0) {
 		/* waitpid() failed?  This is ugly. */
 		archive_set_error(&self->archive->archive, ARCHIVE_ERRNO_MISC,
-		    "Child process exited badly");
+		    "Error closing child process");
 		return (ARCHIVE_WARN);
 	}
 
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_support_format_7zip.c b/Utilities/cmlibarchive/libarchive/archive_read_support_format_7zip.c
index e88e966294..19c7333563 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_support_format_7zip.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_support_format_7zip.c
@@ -84,7 +84,7 @@
 /*
  * ELF format
  */
-#define ELF_HDR_MIN_LEN 0x34
+#define ELF_HDR_MIN_LEN 0x3f
 #define ELF_HDR_EI_CLASS_OFFSET 0x04
 #define ELF_HDR_EI_DATA_OFFSET 0x05
 
@@ -815,6 +815,8 @@ find_elf_data_sec(struct archive_read *a)
 			strtab_size = (*dec32)(
 			    h + e_shstrndx * e_shentsize + 0x14);
 		}
+		if (strtab_size < 6 || strtab_size > SIZE_MAX)
+			break;
 
 		/*
 		 * Read the STRTAB section to find the .data offset
@@ -1398,7 +1400,8 @@ init_decompression(struct archive_read *a, struct _7zip *zip,
 		 * size to liblzma when using lzma_raw_decoder() liblzma
 		 * could correctly deal with BCJ+LZMA. But unfortunately
 		 * there is no way to do that.
-		 * Discussion about this can be found at XZ Utils forum.
+		 *
+		 * Reference: https://web.archive.org/web/20240405171610/https://www.mail-archive.com/xz-devel@tukaani.org/msg00373.html
 		 */
 		if (coder2 != NULL) {
 			zip->codec2 = coder2->codec;
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_support_format_mtree.c b/Utilities/cmlibarchive/libarchive/archive_read_support_format_mtree.c
index ba0e49de24..ded13bee79 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_support_format_mtree.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_support_format_mtree.c
@@ -51,6 +51,7 @@
 #include "archive.h"
 #include "archive_entry.h"
 #include "archive_entry_private.h"
+#include "archive_platform_stat.h"
 #include "archive_private.h"
 #include "archive_rb.h"
 #include "archive_read_private.h"
@@ -1073,6 +1074,8 @@ read_mtree(struct archive_read *a, struct mtree *mtree)
 		/* Non-printable characters are not allowed */
 		for (s = p;s < p + len - 1; s++) {
 			if (!isprint((unsigned char)*s) && *s != '\t') {
+				archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
+					"Non-printable character 0x%02X", (unsigned char)(*s));
 				r = ARCHIVE_FATAL;
 				break;
 			}
@@ -1175,7 +1178,7 @@ parse_file(struct archive_read *a, struct archive_entry *entry,
     struct mtree *mtree, struct mtree_entry *mentry, int *use_next)
 {
 	const char *path;
-	struct stat st_storage, *st;
+	la_seek_stat_t st_storage, *st;
 	struct mtree_entry *mp;
 	struct archive_entry *sparse_entry;
 	int r = ARCHIVE_OK, r1, parsed_kws;
@@ -1251,7 +1254,7 @@ parse_file(struct archive_read *a, struct archive_entry *entry,
 				archive_entry_filetype(entry) == AE_IFDIR) {
 			mtree->fd = open(path, O_RDONLY | O_BINARY | O_CLOEXEC);
 			__archive_ensure_cloexec_flag(mtree->fd);
-			if (mtree->fd == -1 && (
+			if (mtree->fd < 0 && (
 #if defined(_WIN32) && !defined(__CYGWIN__)
         /*
          * On Windows, attempting to open a file with an
@@ -1270,7 +1273,7 @@ parse_file(struct archive_read *a, struct archive_entry *entry,
 
 		st = &st_storage;
 		if (mtree->fd >= 0) {
-			if (fstat(mtree->fd, st) == -1) {
+			if (la_seek_fstat(mtree->fd, st) == -1) {
 				archive_set_error(&a->archive, errno,
 						"Could not fstat %s", path);
 				r = ARCHIVE_WARN;
@@ -1283,7 +1286,7 @@ parse_file(struct archive_read *a, struct archive_entry *entry,
 #ifdef HAVE_LSTAT
 		else if (lstat(path, st) == -1)
 #else
-		else if (la_stat(path, st) == -1)
+		else if (la_seek_stat(path, st) == -1)
 #endif
 		{
 			st = NULL;
@@ -2130,6 +2133,13 @@ readline(struct archive_read *a, struct mtree *mtree, char **start,
 		for (u = mtree->line.s + find_off; *u; ++u) {
 			if (u[0] == '\n') {
 				/* Ends with unescaped newline. */
+				/* Check if preceded by '\r' for CRLF handling */
+				if (u > mtree->line.s && u[-1] == '\r') {
+					/* CRLF ending - remove the '\r' */
+					u[-1] = '\n';
+					u[0] = '\0';
+					total_size--;
+				}
 				*start = mtree->line.s;
 				return total_size;
 			} else if (u[0] == '#') {
@@ -2144,6 +2154,11 @@ readline(struct archive_read *a, struct mtree *mtree, char **start,
 					total_size -= 2;
 					mtree->line.s[total_size] = '\0';
 					break;
+				} else if (u[1] == '\r' && u[2] == '\n') {
+					/* Trim escaped CRLF. */
+					total_size -= 3;
+					mtree->line.s[total_size] = '\0';
+					break;
 				} else if (u[1] != '\0') {
 					/* Skip the two-char escape sequence */
 					++u;
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_support_format_rar.c b/Utilities/cmlibarchive/libarchive/archive_read_support_format_rar.c
index 777cfade22..c8792b9436 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_support_format_rar.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_support_format_rar.c
@@ -1119,8 +1119,6 @@ archive_read_format_rar_read_data(struct archive_read *a, const void **buff,
   if (rar->entry_eof || rar->offset_seek >= rar->unp_size) {
     *size = 0;
     *offset = rar->offset;
-    if (*offset < rar->unp_size)
-      *offset = rar->unp_size;
     return (ARCHIVE_EOF);
   }
 
@@ -1457,7 +1455,7 @@ read_header(struct archive_read *a, struct archive_entry *entry,
     return (ARCHIVE_FATAL);
 #endif
   }
-  /* If no CRC error, Go on parsing File Header. */
+  /* If no CRC error, go on parsing File Header. */
   p = h;
   endp = p + header_size - 7;
   memcpy(&file_header, p, sizeof(file_header));
@@ -2370,8 +2368,8 @@ parse_codes(struct archive_read *a)
         return (ARCHIVE_FATAL);
       }
 
-      /* Make sure ppmd7_contest is freed before Ppmd7_Construct
-       * because reading a broken file cause this abnormal sequence. */
+      /* Make sure ppmd7_context is freed before Ppmd7_Construct
+       * because reading a broken file causes this abnormal sequence. */
       __archive_ppmd7_functions.Ppmd7_Free(&rar->ppmd7_context);
 
       rar->bytein.a = a;
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_support_format_rar5.c b/Utilities/cmlibarchive/libarchive/archive_read_support_format_rar5.c
index 595476f996..f0e93aecba 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_support_format_rar5.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_support_format_rar5.c
@@ -1619,10 +1619,13 @@ static int process_head_file_extra(struct archive_read* a,
 {
 	uint64_t extra_field_size;
 	uint64_t extra_field_id = 0;
-	int ret = ARCHIVE_FATAL;
 	uint64_t var_size;
 
 	while(extra_data_size > 0) {
+		/* Make sure we won't fail if the file declares only unsupported
+		attributes. */
+		int ret = ARCHIVE_OK;
+
 		if(!read_var(a, &extra_field_size, &var_size))
 			return ARCHIVE_EOF;
 
@@ -1675,12 +1678,53 @@ static int process_head_file_extra(struct archive_read* a,
 				if (ARCHIVE_OK != consume(a, extra_field_size)) {
 					return ARCHIVE_EOF;
 				}
+
+				/* Don't fail on unsupported attribute -- we've handled it
+				   by skipping over it. */
+				ret = ARCHIVE_OK;
+		}
+
+		if (ret != ARCHIVE_OK) {
+			/* Forward any errors signalled by the attribute parsing
+			   functions. */
+			return ret;
 		}
 	}
 
-	if(ret != ARCHIVE_OK) {
-		/* Attribute not implemented. */
-		return ret;
+	if (extra_data_size != 0) {
+		/* We didn't skip everything, or we skipped too much; either way,
+		   there's an error in this parsing function. */
+
+		archive_set_error(&a->archive, ARCHIVE_ERRNO_PROGRAMMER,
+				"unsupported structure of file header extra data");
+		return ARCHIVE_FATAL;
+	}
+
+	return ARCHIVE_OK;
+}
+
+static int file_entry_sanity_checks(struct archive_read* a,
+	size_t block_flags, uint8_t is_dir, uint64_t unpacked_size,
+	size_t packed_size)
+{
+	if (is_dir) {
+		const int declares_data_size =
+			(int) (unpacked_size != 0 || packed_size != 0);
+
+		/* FILE entries for directories still declare HFL_DATA in block flags,
+		   even though attaching data to such blocks doesn't make much sense. */
+		if (declares_data_size) {
+			archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
+				"directory entries cannot have any data");
+			return ARCHIVE_FATAL;
+		}
+	} else {
+		const int declares_hfl_data = (int) ((block_flags & HFL_DATA) != 0);
+		if (!declares_hfl_data) {
+			archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
+					"no data found in file/service block");
+			return ARCHIVE_FATAL;
+		}
 	}
 
 	return ARCHIVE_OK;
@@ -1701,6 +1745,7 @@ static int process_head_file(struct archive_read* a, struct rar5* rar,
 	int c_method = 0, c_version = 0;
 	char name_utf8_buf[MAX_NAME_IN_BYTES];
 	const uint8_t* p;
+	int sanity_ret;
 
 	enum FILE_FLAGS {
 		DIRECTORY = 0x0001, UTIME = 0x0002, CRC32 = 0x0004,
@@ -1744,10 +1789,6 @@ static int process_head_file(struct archive_read* a, struct rar5* rar,
 		rar->file.bytes_remaining = data_size;
 	} else {
 		rar->file.bytes_remaining = 0;
-
-		archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
-				"no data found in file/service block");
-		return ARCHIVE_FATAL;
 	}
 
 	if(!read_var_sized(a, &file_flags, NULL))
@@ -1764,6 +1805,13 @@ static int process_head_file(struct archive_read* a, struct rar5* rar,
 
 	rar->file.dir = (uint8_t) ((file_flags & DIRECTORY) > 0);
 
+	sanity_ret = file_entry_sanity_checks(a, block_flags, rar->file.dir,
+		unpacked_size, data_size);
+
+	if (sanity_ret != ARCHIVE_OK) {
+		return sanity_ret;
+	}
+
 	if(!read_var_sized(a, &file_attr, NULL))
 		return ARCHIVE_EOF;
 
@@ -4174,7 +4222,7 @@ static int rar5_read_data(struct archive_read *a, const void **buff,
 		 * it's impossible to perform any decompression. */
 		archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
 		    "Can't decompress an entry marked as a directory");
-		return ARCHIVE_FAILED;
+		return ARCHIVE_FATAL;
 	}
 
 	if(!rar->skip_mode && (rar->cstate.last_write_ptr > rar->file.unpacked_size)) {
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_support_format_tar.c b/Utilities/cmlibarchive/libarchive/archive_read_support_format_tar.c
index 59d694145c..ccaea873c1 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_support_format_tar.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_support_format_tar.c
@@ -233,7 +233,7 @@ static int	tar_read_header(struct archive_read *, struct tar *,
 		    struct archive_entry *, int64_t *);
 static int	tohex(int c);
 static char	*url_decode(const char *, size_t);
-static void	tar_flush_unconsumed(struct archive_read *, int64_t *);
+static int	tar_flush_unconsumed(struct archive_read *, int64_t *);
 
 /* Sanity limits:  These numbers should be low enough to
  * prevent a maliciously-crafted archive from forcing us to
@@ -477,7 +477,7 @@ archive_read_format_tar_options(struct archive_read *a,
  * how much unconsumed data we have floating around, and to consume
  * anything outstanding since we're going to do read_aheads
  */
-static void
+static int
 tar_flush_unconsumed(struct archive_read *a, int64_t *unconsumed)
 {
 	if (*unconsumed) {
@@ -490,9 +490,13 @@ tar_flush_unconsumed(struct archive_read *a, int64_t *unconsumed)
 			memset(data, 0xff, *unconsumed);
 		}
 */
-		__archive_read_consume(a, *unconsumed);
+		int64_t consumed = __archive_read_consume(a, *unconsumed);
+		if (consumed != *unconsumed) {
+			return (ARCHIVE_FATAL);
+		}
 		*unconsumed = 0;
 	}
+	return (ARCHIVE_OK);
 }
 
 /*
@@ -750,7 +754,9 @@ tar_read_header(struct archive_read *a, struct tar *tar,
 
 		/* Find the next valid header record. */
 		while (1) {
-			tar_flush_unconsumed(a, unconsumed);
+			if (tar_flush_unconsumed(a, unconsumed) != ARCHIVE_OK) {
+				return (ARCHIVE_FATAL);
+			}
 
 			/* Read 512-byte header record */
 			h = __archive_read_ahead(a, 512, &bytes);
@@ -796,7 +802,9 @@ tar_read_header(struct archive_read *a, struct tar *tar,
 
 			/* This is NOT a null block, so it must be a valid header. */
 			if (!checksum(a, h)) {
-				tar_flush_unconsumed(a, unconsumed);
+				if (tar_flush_unconsumed(a, unconsumed) != ARCHIVE_OK) {
+					return (ARCHIVE_FATAL);
+				}
 				archive_set_error(&a->archive, EINVAL,
 						  "Damaged tar archive (bad header checksum)");
 				/* If we've read some critical information (pax headers, etc)
@@ -1236,7 +1244,7 @@ header_volume(struct archive_read *a, struct tar *tar,
 
 	header = (const struct archive_entry_header_ustar *)h;
 	size = tar_atol(header->size, sizeof(header->size));
-	if (size > (int64_t)pathname_limit) {
+	if (size < 0 || size > (int64_t)pathname_limit) {
 		return (ARCHIVE_FATAL);
 	}
 	to_consume = ((size + 511) & ~511);
@@ -1255,13 +1263,15 @@ read_bytes_to_string(struct archive_read *a,
 	const void *src;
 
 	/* Fail if we can't make our buffer big enough. */
-	if (archive_string_ensure(as, (size_t)size+1) == NULL) {
+	if (archive_string_ensure(as, size + 1) == NULL) {
 		archive_set_error(&a->archive, ENOMEM,
 		    "No memory");
 		return (ARCHIVE_FATAL);
 	}
 
-	tar_flush_unconsumed(a, unconsumed);
+	if (tar_flush_unconsumed(a, unconsumed) != ARCHIVE_OK) {
+		return (ARCHIVE_FATAL);
+	}
 
 	/* Read the body into the string. */
 	src = __archive_read_ahead(a, size, NULL);
@@ -1272,9 +1282,9 @@ read_bytes_to_string(struct archive_read *a,
 		*unconsumed = 0;
 		return (ARCHIVE_FATAL);
 	}
-	memcpy(as->s, src, (size_t)size);
+	memcpy(as->s, src, size);
 	as->s[size] = '\0';
-	as->length = (size_t)size;
+	as->length = size;
 	*unconsumed += size;
 	return (ARCHIVE_OK);
 }
@@ -1715,7 +1725,9 @@ read_mac_metadata_blob(struct archive_read *a,
 	 * Q: Is the above idea really possible?  Even
 	 * when there are GNU or pax extension entries?
 	 */
-	tar_flush_unconsumed(a, unconsumed);
+	if (tar_flush_unconsumed(a, unconsumed) != ARCHIVE_OK) {
+		return (ARCHIVE_FATAL);
+	}
 	data = __archive_read_ahead(a, msize, NULL);
 	if (data == NULL) {
 		archive_set_error(&a->archive, EINVAL,
@@ -1900,7 +1912,9 @@ header_pax_extension(struct archive_read *a, struct tar *tar,
 		    (long long)ext_size, (long long)ext_size_limit);
 		return (ARCHIVE_WARN);
 	}
-	tar_flush_unconsumed(a, unconsumed);
+	if (tar_flush_unconsumed(a, unconsumed) != ARCHIVE_OK) {
+		return (ARCHIVE_FATAL);
+	}
 
 	/* Parse the size/name of each pax attribute in the body */
 	archive_string_init(&attr_name);
@@ -1994,7 +2008,9 @@ header_pax_extension(struct archive_read *a, struct tar *tar,
 
 		/* Consume size, name, and `=` */
 		*unconsumed += p - attr_start;
-		tar_flush_unconsumed(a, unconsumed);
+		if (tar_flush_unconsumed(a, unconsumed) != ARCHIVE_OK) {
+			return (ARCHIVE_FATAL);
+		}
 
 		if (value_length == 0) {
 			archive_set_error(&a->archive, EINVAL,
@@ -2017,7 +2033,9 @@ header_pax_extension(struct archive_read *a, struct tar *tar,
 		err = err_combine(err, r);
 
 		/* Consume the `\n` that follows the pax attribute value. */
-		tar_flush_unconsumed(a, unconsumed);
+		if (tar_flush_unconsumed(a, unconsumed) != ARCHIVE_OK) {
+			return (ARCHIVE_FATAL);
+		}
 		p = __archive_read_ahead(a, 1, &did_read);
 		if (p == NULL) {
 			archive_set_error(&a->archive, EINVAL,
@@ -2033,7 +2051,9 @@ header_pax_extension(struct archive_read *a, struct tar *tar,
 		}
 		ext_size -= 1;
 		*unconsumed += 1;
-		tar_flush_unconsumed(a, unconsumed);
+		if (tar_flush_unconsumed(a, unconsumed) != ARCHIVE_OK) {
+			return (ARCHIVE_FATAL);
+		}
 	}
 	archive_string_free(&attr_name);
 	*unconsumed += ext_size + ext_padding;
@@ -2291,7 +2311,9 @@ pax_attribute_read_number(struct archive_read *a, size_t value_length, int64_t *
 
 	archive_string_init(&as);
 	r = read_bytes_to_string(a, &as, value_length, &unconsumed);
-	tar_flush_unconsumed(a, &unconsumed);
+	if (tar_flush_unconsumed(a, &unconsumed) != ARCHIVE_OK) {
+		return (ARCHIVE_FATAL);
+	}
 	if (r < ARCHIVE_OK) {
 		archive_string_free(&as);
 		*result = 0;
@@ -2941,7 +2963,9 @@ header_gnutar(struct archive_read *a, struct tar *tar,
 	/* Copy filename over (to ensure null termination). */
 	header = (const struct archive_entry_header_gnutar *)h;
 	const char *existing_pathname = archive_entry_pathname(entry);
-	if (existing_pathname == NULL || existing_pathname[0] == '\0') {
+	const wchar_t *existing_wcs_pathname = archive_entry_pathname_w(entry);
+	if ((existing_pathname == NULL || existing_pathname[0] == '\0')
+	    && (existing_wcs_pathname == NULL || existing_wcs_pathname[0] == L'\0')) {
 		if (archive_entry_copy_pathname_l(entry,
 		    header->name, sizeof(header->name), tar->sconv) != 0) {
 			err = set_conversion_failed_error(a, tar->sconv, "Pathname");
@@ -3094,7 +3118,9 @@ gnu_sparse_old_read(struct archive_read *a, struct tar *tar,
 		return (ARCHIVE_OK);
 
 	do {
-		tar_flush_unconsumed(a, unconsumed);
+		if (tar_flush_unconsumed(a, unconsumed) != ARCHIVE_OK) {
+			return (ARCHIVE_FATAL);
+		}
 		data = __archive_read_ahead(a, 512, &bytes_read);
 		if (data == NULL) {
 			archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
@@ -3284,7 +3310,9 @@ gnu_sparse_10_read(struct archive_read *a, struct tar *tar, int64_t *unconsumed)
 			return (ARCHIVE_FATAL);
 	}
 	/* Skip rest of block... */
-	tar_flush_unconsumed(a, unconsumed);
+	if (tar_flush_unconsumed(a, unconsumed) != ARCHIVE_OK) {
+		return (ARCHIVE_FATAL);
+	}
 	bytes_read = tar->entry_bytes_remaining - remaining;
 	to_skip = 0x1ff & -bytes_read;
 	/* Fail if tar->entry_bytes_remaing would get negative */
@@ -3510,7 +3538,9 @@ readline(struct archive_read *a, struct tar *tar, const char **start,
 	const char *s;
 	void *p;
 
-	tar_flush_unconsumed(a, unconsumed);
+	if (tar_flush_unconsumed(a, unconsumed) != ARCHIVE_OK) {
+		return (ARCHIVE_FATAL);
+	}
 
 	t = __archive_read_ahead(a, 1, &bytes_read);
 	if (bytes_read <= 0 || t == NULL)
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_support_format_warc.c b/Utilities/cmlibarchive/libarchive/archive_read_support_format_warc.c
index 696f959c34..d8f188cf0b 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_support_format_warc.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_support_format_warc.c
@@ -405,7 +405,7 @@ _warc_read(struct archive_read *a, const void **buf, size_t *bsz, int64_t *off)
 		/* it's our lucky day, no work, we can leave early */
 		*buf = NULL;
 		*bsz = 0U;
-		*off = w->cntoff + 4U/*for \r\n\r\n separator*/;
+		*off = w->cntoff;
 		w->unconsumed = 0U;
 		return (ARCHIVE_EOF);
 	}
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_support_format_xar.c b/Utilities/cmlibarchive/libarchive/archive_read_support_format_xar.c
index 3bc9ae1979..4205d47007 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_support_format_xar.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_support_format_xar.c
@@ -930,7 +930,7 @@ xar_read_data(struct archive_read *a,
 abort_read_data:
 	*buff = NULL;
 	*size = 0;
-	*offset = xar->total;
+	*offset = (int64_t)xar->entry_total;
 	return (r);
 }
 
diff --git a/Utilities/cmlibarchive/libarchive/archive_read_support_format_zip.c b/Utilities/cmlibarchive/libarchive/archive_read_support_format_zip.c
index 6e556e950d..bbfcd05a3f 100644
--- a/Utilities/cmlibarchive/libarchive/archive_read_support_format_zip.c
+++ b/Utilities/cmlibarchive/libarchive/archive_read_support_format_zip.c
@@ -3015,8 +3015,8 @@ init_WinZip_AES_decryption(struct archive_read *a)
 		    p, salt_len, 1000, derived_key, key_len * 2 + 2);
 		if (r != 0) {
 			archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
-			    "Decryption is unsupported due to lack of "
-			    "crypto library");
+			    r == CRYPTOR_STUB_FUNCTION ? "Decryption is unsupported due "
+				"to lack of crypto library" : "Failed to process passphrase");
 			return (ARCHIVE_FAILED);
 		}
 
diff --git a/Utilities/cmlibarchive/libarchive/archive_string.c b/Utilities/cmlibarchive/libarchive/archive_string.c
index 7437715f91..3bb978335e 100644
--- a/Utilities/cmlibarchive/libarchive/archive_string.c
+++ b/Utilities/cmlibarchive/libarchive/archive_string.c
@@ -2015,7 +2015,7 @@ archive_strncat_l(struct archive_string *as, const void *_p, size_t n,
 	/* We must allocate memory even if there is no data for conversion
 	 * or copy. This simulates archive_string_append behavior. */
 	if (length == 0) {
-		int tn = 1;
+		size_t tn = 1;
 		if (sc != NULL && (sc->flag & SCONV_TO_UTF16))
 			tn = 2;
 		if (archive_string_ensure(as, as->length + tn) == NULL)
@@ -2752,7 +2752,8 @@ archive_string_append_unicode(struct archive_string *as, const void *_p,
 	char *p, *endp;
 	uint32_t uc;
 	size_t w;
-	int n, ret = 0, ts, tm;
+	size_t ts, tm;
+	int n, ret = 0;
 	int (*parse)(uint32_t *, const char *, size_t);
 	size_t (*unparse)(char *, size_t, uint32_t);
 
diff --git a/Utilities/cmlibarchive/libarchive/archive_string_sprintf.c b/Utilities/cmlibarchive/libarchive/archive_string_sprintf.c
index 1c5910e0b2..69b0cdcd83 100644
--- a/Utilities/cmlibarchive/libarchive/archive_string_sprintf.c
+++ b/Utilities/cmlibarchive/libarchive/archive_string_sprintf.c
@@ -146,7 +146,7 @@ archive_string_vsprintf(struct archive_string *as, const char *fmt,
 			case 'z': s = va_arg(ap, ssize_t); break;
 			default:  s = va_arg(ap, int); break;
 			}
-		        append_int(as, s, 10);
+			append_int(as, s, 10);
 			break;
 		case 's':
 			switch(long_flag) {
diff --git a/Utilities/cmlibarchive/libarchive/archive_util.c b/Utilities/cmlibarchive/libarchive/archive_util.c
index ecb4fe6d29..f3cbf0eb8a 100644
--- a/Utilities/cmlibarchive/libarchive/archive_util.c
+++ b/Utilities/cmlibarchive/libarchive/archive_util.c
@@ -445,11 +445,39 @@ __archive_mkstemp(wchar_t *template)
 #else
 
 static int
-get_tempdir(struct archive_string *temppath)
+__archive_issetugid(void)
 {
-	const char *tmp;
+#ifdef HAVE_ISSETUGID
+	return (issetugid());
+#elif HAVE_GETRESUID
+	uid_t ruid, euid, suid;
+	gid_t rgid, egid, sgid;
+	if (getresuid(&ruid, &euid, &suid) != 0)
+		return (-1);
+	if (ruid != euid || ruid != suid)
+		return (1);
+	if (getresgid(&ruid, &egid, &sgid) != 0)
+		return (-1);
+	if (rgid != egid || rgid != sgid)
+		return (1);
+#elif HAVE_GETEUID
+	if (geteuid() != getuid())
+		return (1);
+#if HAVE_GETEGID
+	if (getegid() != getgid())
+		return (1);
+#endif
+#endif
+	return (0);
+}
 
-	tmp = getenv("TMPDIR");
+int
+__archive_get_tempdir(struct archive_string *temppath)
+{
+	const char *tmp = NULL;
+
+	if (__archive_issetugid() == 0)
+		tmp = getenv("TMPDIR");
 	if (tmp == NULL)
 #ifdef _PATH_TMP
 		tmp = _PATH_TMP;
@@ -476,7 +504,7 @@ __archive_mktemp(const char *tmpdir)
 
 	archive_string_init(&temp_name);
 	if (tmpdir == NULL) {
-		if (get_tempdir(&temp_name) != ARCHIVE_OK)
+		if (__archive_get_tempdir(&temp_name) != ARCHIVE_OK)
 			goto exit_tmpfile;
 	} else {
 		archive_strcpy(&temp_name, tmpdir);
@@ -538,7 +566,7 @@ __archive_mktempx(const char *tmpdir, char *template)
 	if (template == NULL) {
 		archive_string_init(&temp_name);
 		if (tmpdir == NULL) {
-			if (get_tempdir(&temp_name) != ARCHIVE_OK)
+			if (__archive_get_tempdir(&temp_name) != ARCHIVE_OK)
 				goto exit_tmpfile;
 		} else
 			archive_strcpy(&temp_name, tmpdir);
diff --git a/Utilities/cmlibarchive/libarchive/archive_windows.c b/Utilities/cmlibarchive/libarchive/archive_windows.c
index 03c9736c06..e55f995c77 100644
--- a/Utilities/cmlibarchive/libarchive/archive_windows.c
+++ b/Utilities/cmlibarchive/libarchive/archive_windows.c
@@ -45,6 +45,7 @@
 #if defined(_WIN32) && !defined(__CYGWIN__)
 
 #include "archive_platform.h"
+#include "archive_platform_stat.h"
 #include "archive_private.h"
 #include "archive_entry.h"
 #include "archive_time_private.h"
@@ -313,6 +314,10 @@ __la_open(const char *path, int flags, ...)
 	pmode = va_arg(ap, int);
 	va_end(ap);
 	ws = NULL;
+
+	/* _(w)sopen_s fails if we provide any other modes */
+	pmode = pmode & (_S_IREAD | _S_IWRITE);
+
 	if ((flags & ~O_BINARY) == O_RDONLY) {
 		/*
 		 * When we open a directory, _open function returns
@@ -374,7 +379,7 @@ __la_open(const char *path, int flags, ...)
 		   TODO: Fix mode of new file.  */
 		r = _open(path, flags);
 #else
-		r = _open(path, flags, pmode);
+		_sopen_s(&r, path, flags, _SH_DENYNO, pmode);
 #endif
 		if (r < 0 && errno == EACCES && (flags & O_CREAT) != 0) {
 			/* Simulate other POSIX system action to pass our test suite. */
@@ -395,7 +400,7 @@ __la_open(const char *path, int flags, ...)
 			return (-1);
 		}
 	}
-	r = _wopen(ws, flags, pmode);
+	_wsopen_s(&r, ws, flags, _SH_DENYNO, pmode);
 	if (r < 0 && errno == EACCES && (flags & O_CREAT) != 0) {
 		/* Simulate other POSIX system action to pass our test suite. */
 		attr = GetFileAttributesW(ws);
@@ -410,6 +415,93 @@ __la_open(const char *path, int flags, ...)
 	return (r);
 }
 
+int
+__la_wopen(const wchar_t *path, int flags, ...)
+{
+	va_list ap;
+	wchar_t *fullpath;
+	int r, pmode;
+	DWORD attr;
+
+	va_start(ap, flags);
+	pmode = va_arg(ap, int);
+	va_end(ap);
+	fullpath = NULL;
+
+	/* _(w)sopen_s fails if we provide any other modes */
+	pmode = pmode & (_S_IREAD | _S_IWRITE);
+
+	if ((flags & ~O_BINARY) == O_RDONLY) {
+		/*
+		 * When we open a directory, _open function returns
+		 * "Permission denied" error.
+		 */
+		attr = GetFileAttributesW(path);
+#if !defined(WINAPI_FAMILY_PARTITION) || WINAPI_FAMILY_PARTITION (WINAPI_PARTITION_DESKTOP)
+		if (attr == (DWORD)-1 && GetLastError() == ERROR_PATH_NOT_FOUND)
+#endif
+		{
+			fullpath = __la_win_permissive_name_w(path);
+			if (fullpath == NULL) {
+				errno = EINVAL;
+				return (-1);
+			}
+			path = fullpath;
+			attr = GetFileAttributesW(fullpath);
+		}
+		if (attr == (DWORD)-1) {
+			la_dosmaperr(GetLastError());
+			free(fullpath);
+			return (-1);
+		}
+		if (attr & FILE_ATTRIBUTE_DIRECTORY) {
+			HANDLE handle;
+#if !defined(WINAPI_FAMILY_PARTITION) || WINAPI_FAMILY_PARTITION (WINAPI_PARTITION_DESKTOP)
+			if (fullpath != NULL)
+				handle = CreateFileW(fullpath, 0, 0, NULL,
+				    OPEN_EXISTING,
+				    FILE_FLAG_BACKUP_SEMANTICS |
+				    FILE_ATTRIBUTE_READONLY,
+					NULL);
+			else
+				handle = CreateFileW(path, 0, 0, NULL,
+				    OPEN_EXISTING,
+				    FILE_FLAG_BACKUP_SEMANTICS |
+				    FILE_ATTRIBUTE_READONLY,
+					NULL);
+#else /* !WINAPI_PARTITION_DESKTOP */
+			CREATEFILE2_EXTENDED_PARAMETERS createExParams;
+			ZeroMemory(&createExParams, sizeof(createExParams));
+			createExParams.dwSize = sizeof(createExParams);
+			createExParams.dwFileAttributes = FILE_ATTRIBUTE_READONLY;
+			createExParams.dwFileFlags = FILE_FLAG_BACKUP_SEMANTICS;
+			handle = CreateFile2(fullpath, 0, 0,
+				OPEN_EXISTING, &createExParams);
+#endif /* !WINAPI_PARTITION_DESKTOP */
+			free(fullpath);
+			if (handle == INVALID_HANDLE_VALUE) {
+				la_dosmaperr(GetLastError());
+				return (-1);
+			}
+			r = _open_osfhandle((intptr_t)handle, _O_RDONLY);
+			return (r);
+		}
+	}
+	_wsopen_s(&r, path, flags, _SH_DENYNO, pmode);
+	if (r < 0 && errno == EACCES && (flags & O_CREAT) != 0) {
+		/* Simulate other POSIX system action to pass our test suite. */
+		attr = GetFileAttributesW(path);
+		if (attr == (DWORD)-1)
+			la_dosmaperr(GetLastError());
+		else if (attr & FILE_ATTRIBUTE_DIRECTORY)
+			errno = EISDIR;
+		else
+			errno = EACCES;
+	}
+	free(fullpath);
+	return (r);
+}
+
 ssize_t
 __la_read(int fd, void *buf, size_t nbytes)
 {
@@ -561,6 +653,8 @@ copy_stat(struct stat *st, struct ustat *us)
 	st->st_mode = us->st_mode;
 	st->st_nlink = us->st_nlink;
 	st->st_size = (off_t)us->st_size;
+	if (st->st_size < 0 || (uint64_t)st->st_size != us->st_size)
+		st->st_size = 0;
 	st->st_uid = us->st_uid;
 	st->st_dev = us->st_dev;
 	st->st_rdev = us->st_rdev;
@@ -630,6 +724,53 @@ __la_stat(const char *path, struct stat *st)
 	return (ret);
 }
 
+static void
+copy_seek_stat(la_seek_stat_t *st, struct ustat *us)
+{
+	st->st_mtime = us->st_mtime;
+	st->st_gid = us->st_gid;
+	st->st_ino = getino(us);
+	st->st_mode = us->st_mode;
+	st->st_nlink = us->st_nlink;
+	st->st_size = (la_seek_t)us->st_size;
+	if (st->st_size < 0 || (uint64_t)st->st_size != us->st_size)
+		st->st_size = -1;
+	st->st_uid = us->st_uid;
+	st->st_dev = us->st_dev;
+	st->st_rdev = us->st_rdev;
+}
+
+int
+__la_seek_fstat(int fd, la_seek_stat_t *st)
+{
+	struct ustat u;
+	int ret;
+
+	ret = __hstat((HANDLE)_get_osfhandle(fd), &u);
+	copy_seek_stat(st, &u);
+	return (ret);
+}
+
+int
+__la_seek_stat(const char *path, la_seek_stat_t *st)
+{
+	HANDLE handle;
+	struct ustat u;
+	int ret;
+
+	handle = la_CreateFile(path, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
+		FILE_FLAG_BACKUP_SEMANTICS,
+		NULL);
+	if (handle == INVALID_HANDLE_VALUE) {
+		la_dosmaperr(GetLastError());
+		return (-1);
+	}
+	ret = __hstat(handle, &u);
+	CloseHandle(handle);
+	copy_seek_stat(st, &u);
+	return (ret);
+}
+
 /*
  * This waitpid is limited implementation.
  */
@@ -641,13 +782,14 @@ __la_waitpid(HANDLE child, int *status, int option)
 	(void)option;/* UNUSED */
 	do {
 		if (GetExitCodeProcess(child, &cs) == 0) {
-			CloseHandle(child);
 			la_dosmaperr(GetLastError());
+			CloseHandle(child);
 			*status = 0;
 			return (-1);
 		}
 	} while (cs == STILL_ACTIVE);
 
+	CloseHandle(child);
 	*status = (int)(cs & 0xff);
 	return (0);
 }
diff --git a/Utilities/cmlibarchive/libarchive/archive_windows.h b/Utilities/cmlibarchive/libarchive/archive_windows.h
index 8afe1f6463..9facf5ff36 100644
--- a/Utilities/cmlibarchive/libarchive/archive_windows.h
+++ b/Utilities/cmlibarchive/libarchive/archive_windows.h
@@ -77,6 +77,9 @@
 #pragma warning(disable:4142)   /* benign redefinition of type */
 #pragma warning(disable:4761)   /* integral size mismatch in argument; conversion supplied */
 #endif
+
+#include "archive_platform_stat.h"
+
 #if defined(__BORLANDC__)
 #pragma warn -8068	/* Constant out of range in comparison. */
 #pragma warn -8072	/* Suspicious pointer arithmetic. */
@@ -111,6 +114,7 @@
 #endif
 #define	lstat		__la_stat
 #define	open		__la_open
+#define	_wopen		__la_wopen
 #define	read		__la_read
 #if !defined(__BORLANDC__) && !defined(__WATCOMC__)
 #define setmode		_setmode
@@ -267,6 +271,9 @@
     #define	F_OK    0       /*  Test for existence of file  */
 #endif
 
+/* Functions to circumvent off_t limitations */
+int __la_seek_fstat(int fd, la_seek_stat_t *st);
+int __la_seek_stat(const char *path, la_seek_stat_t *st);
 
 /* Replacement POSIX function */
 extern int	 __la_fstat(int fd, struct stat *st);
@@ -275,6 +282,7 @@ extern int	 __la_lstat(const char *path, struct stat *st);
 extern __int64	 __la_lseek(int fd, __int64 offset, int whence);
 #endif
 extern int	 __la_open(const char *path, int flags, ...);
+extern int	 __la_wopen(const wchar_t *path, int flags, ...);
 extern ssize_t	 __la_read(int fd, void *buf, size_t nbytes);
 extern int	 __la_stat(const char *path, struct stat *st);
 extern pid_t	 __la_waitpid(HANDLE child, int *status, int option);
diff --git a/Utilities/cmlibarchive/libarchive/archive_write.c b/Utilities/cmlibarchive/libarchive/archive_write.c
index a8e7b63b5b..9b9cb196f0 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write.c
@@ -360,7 +360,6 @@ archive_write_client_open(struct archive_write_filter *f)
 	struct archive_none *state;
 	void *buffer;
 	size_t buffer_size;
-	int ret;
 
 	f->bytes_per_block = archive_write_get_bytes_per_block(f->archive);
 	f->bytes_in_last_block =
@@ -385,13 +384,7 @@ archive_write_client_open(struct archive_write_filter *f)
 
 	if (a->client_opener == NULL)
 		return (ARCHIVE_OK);
-	ret = a->client_opener(f->archive, a->client_data);
-	if (ret != ARCHIVE_OK) {
-		free(state->buffer);
-		free(state);
-		f->data = NULL;
-	}
-	return (ret);
+	return (a->client_opener(f->archive, a->client_data));
 }
 
 static int
@@ -480,6 +473,7 @@ static int
 archive_write_client_free(struct archive_write_filter *f)
 {
 	struct archive_write *a = (struct archive_write *)f->archive;
+	struct archive_none *state = (struct archive_none *)f->data;
 
 	if (a->client_freer)
 		(*a->client_freer)(&a->archive, a->client_data);
@@ -492,6 +486,13 @@ archive_write_client_free(struct archive_write_filter *f)
 		a->passphrase = NULL;
 	}
 
+	/* Free state. */
+	if (state != NULL) {
+		free(state->buffer);
+		free(state);
+		f->data = NULL;
+	}
+
 	return (ARCHIVE_OK);
 }
 
@@ -548,8 +549,6 @@ archive_write_client_close(struct archive_write_filter *f)
 	}
 	if (a->client_closer)
 		(*a->client_closer)(&a->archive, a->client_data);
-	free(state->buffer);
-	free(state);
 
 	/* Clear the close handler myself not to be called again. */
 	f->state = ARCHIVE_WRITE_FILTER_STATE_CLOSED;
@@ -807,7 +806,10 @@ _archive_write_finish_entry(struct archive *_a)
 	if (a->archive.state & ARCHIVE_STATE_DATA
 	    && a->format_finish_entry != NULL)
 		ret = (a->format_finish_entry)(a);
-	a->archive.state = ARCHIVE_STATE_HEADER;
+	if (ret == ARCHIVE_FATAL)
+		a->archive.state = ARCHIVE_STATE_FATAL;
+	else
+		a->archive.state = ARCHIVE_STATE_HEADER;
 	return (ret);
 }
 
@@ -819,6 +821,7 @@ _archive_write_data(struct archive *_a, const void *buff, size_t s)
 {
 	struct archive_write *a = (struct archive_write *)_a;
 	const size_t max_write = INT_MAX;
+	int ret;
 
 	archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
 	    ARCHIVE_STATE_DATA, "archive_write_data");
@@ -826,7 +829,10 @@ _archive_write_data(struct archive *_a, const void *buff, size_t s)
 	if (s > max_write)
 		s = max_write;
 	archive_clear_error(&a->archive);
-	return ((a->format_write_data)(a, buff, s));
+	ret = (a->format_write_data)(a, buff, s);
+	if (ret == ARCHIVE_FATAL)
+		a->archive.state = ARCHIVE_STATE_FATAL;
+	return (ret);
 }
 
 static struct archive_write_filter *
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_add_filter_bzip2.c b/Utilities/cmlibarchive/libarchive/archive_write_add_filter_bzip2.c
index ea9e9b0924..e5d2b0aba7 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_add_filter_bzip2.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_add_filter_bzip2.c
@@ -281,6 +281,10 @@ static int
 archive_compressor_bzip2_free(struct archive_write_filter *f)
 {
 	struct private_data *data = (struct private_data *)f->data;
+
+	/* May already have been called, but not necessarily. */
+	(void)BZ2_bzCompressEnd(&(data->stream));
+
 	free(data->compressed);
 	free(data);
 	f->data = NULL;
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_add_filter_gzip.c b/Utilities/cmlibarchive/libarchive/archive_write_add_filter_gzip.c
index f509f76b08..69c6cf55b7 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_add_filter_gzip.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_add_filter_gzip.c
@@ -191,7 +191,8 @@ static int
 archive_compressor_gzip_open(struct archive_write_filter *f)
 {
 	struct private_data *data = (struct private_data *)f->data;
-	int ret;
+	int ret = ARCHIVE_OK;
+	int init_success;
 
 	if (data->compressed == NULL) {
 		size_t bs = 65536, bpb;
@@ -221,44 +222,66 @@ archive_compressor_gzip_open(struct archive_write_filter *f)
 	data->compressed[0] = 0x1f; /* GZip signature bytes */
 	data->compressed[1] = 0x8b;
 	data->compressed[2] = 0x08; /* "Deflate" compression */
-	data->compressed[3] = data->original_filename == NULL ? 0 : 0x8;
+	data->compressed[3] = 0x00; /* Flags */
 	if (data->timestamp >= 0) {
 		time_t t = time(NULL);
 		data->compressed[4] = (uint8_t)(t)&0xff;  /* Timestamp */
 		data->compressed[5] = (uint8_t)(t>>8)&0xff;
 		data->compressed[6] = (uint8_t)(t>>16)&0xff;
 		data->compressed[7] = (uint8_t)(t>>24)&0xff;
-	} else
+	} else {
 		memset(&data->compressed[4], 0, 4);
-    if (data->compression_level == 9)
-	    data->compressed[8] = 2;
-    else if(data->compression_level == 1)
-	    data->compressed[8] = 4;
-    else
-	    data->compressed[8] = 0;
+	}
+	if (data->compression_level == 9) {
+		data->compressed[8] = 2;
+	} else if(data->compression_level == 1) {
+		data->compressed[8] = 4;
+	} else {
+		data->compressed[8] = 0;
+	}
 	data->compressed[9] = 3; /* OS=Unix */
 	data->stream.next_out += 10;
 	data->stream.avail_out -= 10;
 
 	if (data->original_filename != NULL) {
-		strcpy((char*)data->compressed + 10, data->original_filename);
-		data->stream.next_out += strlen(data->original_filename) + 1;
-		data->stream.avail_out -= strlen(data->original_filename) + 1;
+		/* Limit "original filename" to 32k or the
+		 * remaining space in the buffer, whichever is smaller.
+		 */
+		int ofn_length = strlen(data->original_filename);
+		int ofn_max_length = 32768;
+		int ofn_space_available = data->compressed
+			+ data->compressed_buffer_size
+			- data->stream.next_out
+			- 1;
+		if (ofn_max_length > ofn_space_available) {
+			ofn_max_length = ofn_space_available;
+		}
+		if (ofn_length < ofn_max_length) {
+			data->compressed[3] |= 0x8;
+			strcpy((char*)data->compressed + 10,
+			       data->original_filename);
+			data->stream.next_out += ofn_length + 1;
+			data->stream.avail_out -= ofn_length + 1;
+		} else {
+			archive_set_error(f->archive, ARCHIVE_ERRNO_MISC,
+					  "Gzip 'Original Filename' ignored because it is too long");
+			ret = ARCHIVE_WARN;
+		}
 	}
 
 	f->write = archive_compressor_gzip_write;
 
 	/* Initialize compression library. */
-	ret = deflateInit2(&(data->stream),
+	init_success = deflateInit2(&(data->stream),
 	    data->compression_level,
 	    Z_DEFLATED,
 	    -15 /* < 0 to suppress zlib header */,
 	    8,
 	    Z_DEFAULT_STRATEGY);
 
-	if (ret == Z_OK) {
+	if (init_success == Z_OK) {
 		f->data = data;
-		return (ARCHIVE_OK);
+		return (ret);
 	}
 
 	/* Library setup failed: clean up. */
@@ -266,7 +289,7 @@ archive_compressor_gzip_open(struct archive_write_filter *f)
 	    "initializing compression library");
 
 	/* Override the error message if we know what really went wrong. */
-	switch (ret) {
+	switch (init_success) {
 	case Z_STREAM_ERROR:
 		archive_set_error(f->archive, ARCHIVE_ERRNO_MISC,
 		    "Internal error initializing "
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_add_filter_program.c b/Utilities/cmlibarchive/libarchive/archive_write_add_filter_program.c
index c661cc7f41..f12db33738 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_add_filter_program.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_add_filter_program.c
@@ -330,6 +330,7 @@ __archive_write_program_close(struct archive_write_filter *f,
     struct archive_write_program_data *data)
 {
 	int ret, status;
+	pid_t pid;
 	ssize_t bytes_read;
 
 	if (data->child == 0)
@@ -373,14 +374,12 @@ cleanup:
 		close(data->child_stdin);
 	if (data->child_stdout != -1)
 		close(data->child_stdout);
-	while (waitpid(data->child, &status, 0) == -1 && errno == EINTR)
-		continue;
-#if defined(_WIN32) && !defined(__CYGWIN__)
-	CloseHandle(data->child);
-#endif
+	do {
+		pid = waitpid(data->child, &status, 0);
+	} while (pid == -1 && errno == EINTR);
 	data->child = 0;
 
-	if (status != 0) {
+	if (pid < 0 || status != 0) {
 		archive_set_error(f->archive, EIO,
 		    "Error closing program: %s", data->program_name);
 		ret = ARCHIVE_FATAL;
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_add_filter_zstd.c b/Utilities/cmlibarchive/libarchive/archive_write_add_filter_zstd.c
index ca421c9819..b45af8b580 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_add_filter_zstd.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_add_filter_zstd.c
@@ -391,6 +391,8 @@ archive_compressor_zstd_open(struct archive_write_filter *f)
 
 	ZSTD_CCtx_setParameter(data->cstream, ZSTD_c_nbWorkers, data->threads);
 
+	ZSTD_CCtx_setParameter(data->cstream, ZSTD_c_checksumFlag, 1);
+
 #if ZSTD_VERSION_NUMBER >= MINVER_LONG
 	ZSTD_CCtx_setParameter(data->cstream, ZSTD_c_windowLog, data->long_distance);
 #endif
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_disk_posix.c b/Utilities/cmlibarchive/libarchive/archive_write_disk_posix.c
index 3f4553cd02..b7528ab0c0 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_disk_posix.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_disk_posix.c
@@ -2204,7 +2204,7 @@ restore_entry(struct archive_write_disk *a)
 				(void)clear_nochange_fflags(a);
 
 			if ((a->flags & ARCHIVE_EXTRACT_SAFE_WRITES) &&
-			    S_ISREG(a->st.st_mode)) {
+			    S_ISREG(a->mode)) {
 				/* Use a temporary file to extract */
 				if ((a->fd = la_mktemp(a)) == -1) {
 					archive_set_error(&a->archive, errno,
@@ -2559,9 +2559,9 @@ _archive_write_disk_close(struct archive *_a)
 			 * for directories. For other file types
 			 * we need to verify via fstat() or lstat()
 			 */
-			if (fd == -1 || p->filetype != AE_IFDIR) {
+			if (fd < 0 || p->filetype != AE_IFDIR) {
 #if HAVE_FSTAT
-				if (fd > 0 && (
+				if (fd >= 0 && (
 				    fstat(fd, &st) != 0 ||
 				    la_verify_filetype(st.st_mode,
 				    p->filetype) == 0)) {
@@ -3930,10 +3930,14 @@ clear_nochange_fflags(struct archive_write_disk *a)
 #ifdef UF_APPEND
 	    | UF_APPEND
 #endif
-#ifdef EXT2_APPEND_FL
+#if defined(FS_APPEND_FL)
+	    | FS_APPEND_FL
+#elif defined(EXT2_APPEND_FL)
 	    | EXT2_APPEND_FL
 #endif
-#ifdef EXT2_IMMUTABLE_FL
+#if defined(FS_IMMUTABLE_FL)
+	    | FS_IMMUTABLE_FL
+#elif defined(EXT2_IMMUTABLE_FL)
 	    | EXT2_IMMUTABLE_FL
 #endif
 	;
@@ -4437,7 +4441,7 @@ fixup_appledouble(struct archive_write_disk *a, const char *pathname)
 	 */
 	fd = open(pathname, O_RDONLY | O_BINARY | O_CLOEXEC);
 	__archive_ensure_cloexec_flag(fd);
-	if (fd == -1) {
+	if (fd < 0) {
 		archive_set_error(&a->archive, errno,
 		    "Failed to open a restoring file");
 		ret = ARCHIVE_WARN;
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_disk_windows.c b/Utilities/cmlibarchive/libarchive/archive_write_disk_windows.c
index c7339c4ec1..d4f6f1820e 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_disk_windows.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_disk_windows.c
@@ -1618,7 +1618,7 @@ restore_entry(struct archive_write_disk *a)
 				(void)clear_nochange_fflags(a);
 			}
 			if ((a->flags & ARCHIVE_EXTRACT_SAFE_WRITES) &&
-				S_ISREG(st_mode)) {
+				S_ISREG(a->mode)) {
 				int fd = la_mktemp(a);
 
 				if (fd == -1) {
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_open_fd.c b/Utilities/cmlibarchive/libarchive/archive_write_open_fd.c
index 8a3f68d069..ba034ed92f 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_open_fd.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_open_fd.c
@@ -122,7 +122,7 @@ file_write(struct archive *a, void *client_data, const void *buff, size_t length
 	mine = (struct write_fd_data *)client_data;
 	for (;;) {
 		bytesWritten = write(mine->fd, buff, length);
-		if (bytesWritten <= 0) {
+		if (bytesWritten < 0) {
 			if (errno == EINTR)
 				continue;
 			archive_set_error(a, errno, "Write error");
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_open_file.c b/Utilities/cmlibarchive/libarchive/archive_write_open_file.c
index 4c6ebfb226..0b310f3da8 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_open_file.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_open_file.c
@@ -85,16 +85,12 @@ file_write(struct archive *a, void *client_data, const void *buff, size_t length
 	size_t	bytesWritten;
 
 	mine = client_data;
-	for (;;) {
-		bytesWritten = fwrite(buff, 1, length, mine->f);
-		if (bytesWritten <= 0) {
-			if (errno == EINTR)
-				continue;
-			archive_set_error(a, errno, "Write error");
-			return (-1);
-		}
-		return (bytesWritten);
+	bytesWritten = fwrite(buff, 1, length, mine->f);
+	if (bytesWritten != length) {
+		archive_set_error(a, errno, "Write error");
+		return (-1);
 	}
+	return (bytesWritten);
 }
 
 static int
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_open_filename.c b/Utilities/cmlibarchive/libarchive/archive_write_open_filename.c
index 3420942655..7d0f9bde1d 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_open_filename.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_open_filename.c
@@ -108,6 +108,7 @@ open_filename(struct archive *a, int mbs_fn, const void *filename)
 	else
 		r = archive_mstring_copy_wcs(&mine->filename, filename);
 	if (r < 0) {
+		free(mine);
 		if (errno == ENOMEM) {
 			archive_set_error(a, ENOMEM, "No memory");
 			return (ARCHIVE_FATAL);
@@ -227,7 +228,7 @@ file_write(struct archive *a, void *client_data, const void *buff,
 	mine = (struct write_file_data *)client_data;
 	for (;;) {
 		bytesWritten = write(mine->fd, buff, length);
-		if (bytesWritten <= 0) {
+		if (bytesWritten < 0) {
 			if (errno == EINTR)
 				continue;
 			archive_set_error(a, errno, "Write error");
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_set_format_7zip.c b/Utilities/cmlibarchive/libarchive/archive_write_set_format_7zip.c
index fd41320f3e..3415766cf0 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_set_format_7zip.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_set_format_7zip.c
@@ -686,7 +686,7 @@ write_to_temp(struct archive_write *a, const void *buff, size_t s)
 		ws = write(zip->temp_fd, p, s);
 		if (ws < 0) {
 			archive_set_error(&(a->archive), errno,
-			    "fwrite function failed");
+			    "write function failed");
 			return (ARCHIVE_FATAL);
 		}
 		s -= ws;
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_set_format_mtree.c b/Utilities/cmlibarchive/libarchive/archive_write_set_format_mtree.c
index 02fbb2d2f5..8131574c8d 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_set_format_mtree.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_set_format_mtree.c
@@ -1927,7 +1927,7 @@ mtree_entry_setup_filenames(struct archive_write *a, struct mtree_entry *file,
 	}
 
 	/*
-	 * Find out the position which points the last position of
+	 * Find out the position which points to the last position of
 	 * path separator('/').
 	 */
 	slash = NULL;
@@ -2024,7 +2024,7 @@ mtree_entry_add_child_tail(struct mtree_entry *parent,
 }
 
 /*
- * Find a entry from a parent entry with the name.
+ * Find an entry from a parent entry with given name.
  */
 static struct mtree_entry *
 mtree_entry_find_child(struct mtree_entry *parent, const char *child_name)
@@ -2148,10 +2148,10 @@ mtree_entry_tree_add(struct archive_write *a, struct mtree_entry **filep)
 
 		/* Find next sub directory. */
 		if (!np->dir_info) {
-			/* NOT Directory! */
+			/* NOT a directory! */
 			archive_set_error(&a->archive,
 			    ARCHIVE_ERRNO_MISC,
-			    "`%s' is not directory, we cannot insert `%s' ",
+			    "`%s' is not a directory, we cannot insert `%s' ",
 			    np->pathname.s, file->pathname.s);
 			return (ARCHIVE_FAILED);
 		}
@@ -2243,10 +2243,7 @@ mtree_entry_tree_add(struct archive_write *a, struct mtree_entry **filep)
 	}
 
 same_entry:
-	/*
-	 * We have already has the entry the filename of which is
-	 * the same.
-	 */
+	/* We already have an entry with same filename. */
 	r = mtree_entry_exchange_same_entry(a, np, file);
 	if (r < ARCHIVE_WARN)
 		return (r);
@@ -2264,13 +2261,13 @@ mtree_entry_exchange_same_entry(struct archive_write *a, struct mtree_entry *np,
 
 	if ((np->mode & AE_IFMT) != (file->mode & AE_IFMT)) {
 		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
-		    "Found duplicate entries `%s' and its file type is "
-		    "different",
+		    "Found duplicate entries for `%s' with "
+		    "differing file types.",
 		    np->pathname.s);
 		return (ARCHIVE_FAILED);
 	}
 
-	/* Update the existent mtree entry's attributes by the new one's. */
+	/* Update the existing mtree entry's attributes by the new one's. */
 	archive_string_empty(&np->symlink);
 	archive_string_concat(&np->symlink, &file->symlink);
 	archive_string_empty(&np->uname);
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_set_format_xar.c b/Utilities/cmlibarchive/libarchive/archive_write_set_format_xar.c
index 4b80fe1646..3276f9c8e7 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_set_format_xar.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_set_format_xar.c
@@ -689,7 +689,7 @@ write_to_temp(struct archive_write *a, const void *buff, size_t s)
 		ws = write(xar->temp_fd, p, s);
 		if (ws < 0) {
 			archive_set_error(&(a->archive), errno,
-			    "fwrite function failed");
+			    "write function failed");
 			return (ARCHIVE_FATAL);
 		}
 		s -= ws;
@@ -3418,8 +3418,8 @@ static int
 xml_writer_get_final_content_and_length(struct xml_writer *ctx,
     const char **out, size_t *size)
 {
-	*out = (const char*)ctx->bp->content;
-	*size = (size_t)ctx->bp->use;
+	*out = (const char*)xmlBufferContent(ctx->bp);
+	*size = (size_t)xmlBufferLength(ctx->bp);
 	return (0);
 }
 
diff --git a/Utilities/cmlibarchive/libarchive/archive_write_set_format_zip.c b/Utilities/cmlibarchive/libarchive/archive_write_set_format_zip.c
index 8644db7d35..bb4cb444c0 100644
--- a/Utilities/cmlibarchive/libarchive/archive_write_set_format_zip.c
+++ b/Utilities/cmlibarchive/libarchive/archive_write_set_format_zip.c
@@ -1856,7 +1856,10 @@ archive_write_zip_finish_entry(struct archive_write *a)
 			}
 			ret = __archive_write_output(a, zip->buf, remainder);
 			if (ret != ARCHIVE_OK)
+			{
+				deflateEnd(&zip->stream.deflate);
 				return (ret);
+			}
 			zip->entry_compressed_written += remainder;
 			zip->written_bytes += remainder;
 			zip->stream.deflate.next_out = zip->buf;
@@ -1898,7 +1901,10 @@ archive_write_zip_finish_entry(struct archive_write *a)
 			}
 			ret = __archive_write_output(a, zip->buf, remainder);
 			if (ret != ARCHIVE_OK)
+			{
+				BZ2_bzCompressEnd(&zip->stream.bzip2);
 				return (ret);
+			}
 			zip->entry_compressed_written += remainder;
 			zip->written_bytes += remainder;
 			zip->stream.bzip2.next_out = (char*)zip->buf;
@@ -1940,13 +1946,17 @@ archive_write_zip_finish_entry(struct archive_write *a)
 			}
 			ret = __archive_write_output(a, zip->buf, remainder);
 			if (ret != ARCHIVE_OK)
+			{
+				ZSTD_freeCStream(zip->stream.zstd.context);
 				return (ret);
+			}
 			zip->entry_compressed_written += remainder;
 			zip->written_bytes += remainder;
-			zip->stream.zstd.out.dst = zip->buf;
 			if (zip->stream.zstd.out.pos != zip->stream.zstd.out.size)
 				finishing = 0;
+			zip->stream.zstd.out.dst = zip->buf;
 			zip->stream.zstd.out.size = zip->len_buf;
+			zip->stream.zstd.out.pos = 0;
 		} while (finishing);
 		ZSTD_freeCStream(zip->stream.zstd.context);
 		break;
@@ -1984,7 +1994,10 @@ archive_write_zip_finish_entry(struct archive_write *a)
 			}
 			ret = __archive_write_output(a, zip->buf, remainder);
 			if (ret != ARCHIVE_OK)
+			{
+				lzma_end(&zip->stream.lzma.context);
 				return (ret);
+			}
 			zip->entry_compressed_written += remainder;
 			zip->written_bytes += remainder;
 			zip->stream.lzma.context.next_out = zip->buf;
@@ -2434,13 +2447,19 @@ init_winzip_aes_encryption(struct archive_write *a)
 		    "Can't generate random number for encryption");
 		return (ARCHIVE_FATAL);
 	}
-	archive_pbkdf2_sha1(passphrase, strlen(passphrase),
+	ret = archive_pbkdf2_sha1(passphrase, strlen(passphrase),
 	    salt, salt_len, 1000, derived_key, key_len * 2 + 2);
+	if (ret != 0) {
+		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
+		    ret == CRYPTOR_STUB_FUNCTION ? "Encryption is unsupported due to "
+			"lack of crypto library" : "Failed to process passphrase");
+		return (ARCHIVE_FAILED);
+	}
 
 	ret = archive_encrypto_aes_ctr_init(&zip->cctx, derived_key, key_len);
 	if (ret != 0) {
 		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
-		    "Decryption is unsupported due to lack of crypto library");
+		    "Failed to initialize AES CTR mode");
 		return (ARCHIVE_FAILED);
 	}
 	ret = archive_hmac_sha1_init(&zip->hctx, derived_key + key_len,
diff --git a/Utilities/cmlibarchive/libarchive/filter_fork_posix.c b/Utilities/cmlibarchive/libarchive/filter_fork_posix.c
index c895c08e59..7c48519336 100644
--- a/Utilities/cmlibarchive/libarchive/filter_fork_posix.c
+++ b/Utilities/cmlibarchive/libarchive/filter_fork_posix.c
@@ -1,6 +1,6 @@
 /*-
  * Copyright (c) 2007 Joerg Sonnenberger
- * Copyright (c) 2012 Michihiro NAKAJIMA 
+ * Copyright (c) 2012 Michihiro NAKAJIMA
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -76,7 +76,15 @@ __archive_create_child(const char *cmd, int *child_stdin, int *child_stdout,
 {
 	pid_t child = -1;
 	int stdin_pipe[2], stdout_pipe[2], tmp;
+
+#if !defined(POSIX_SPAWN_CLOEXEC_DEFAULT) && \
+    (HAVE_FORK || HAVE_VFORK) && \
+    (HAVE_CLOSEFROM || HAVE_CLOSE_RANGE || defined(_SC_OPEN_MAX))
+#undef HAVE_POSIX_SPAWNP
+#endif
+
 #if HAVE_POSIX_SPAWNP
+	posix_spawnattr_t attr;
 	posix_spawn_file_actions_t actions;
 	int r;
 #endif
@@ -107,11 +115,21 @@ __archive_create_child(const char *cmd, int *child_stdin, int *child_stdout,
 
 #if HAVE_POSIX_SPAWNP
 
-	r = posix_spawn_file_actions_init(&actions);
+	r = posix_spawnattr_init(&attr);
 	if (r != 0) {
 		errno = r;
 		goto stdout_opened;
 	}
+	r = posix_spawn_file_actions_init(&actions);
+	if (r != 0) {
+		errno = r;
+		goto attr_inited;
+	}
+#ifdef POSIX_SPAWN_CLOEXEC_DEFAULT
+	r = posix_spawnattr_setflags(&attr, POSIX_SPAWN_CLOEXEC_DEFAULT);
+	if (r != 0)
+		goto actions_inited;
+#endif
 	r = posix_spawn_file_actions_addclose(&actions, stdin_pipe[1]);
 	if (r != 0)
 		goto actions_inited;
@@ -136,11 +154,12 @@ __archive_create_child(const char *cmd, int *child_stdin, int *child_stdout,
 		if (r != 0)
 			goto actions_inited;
 	}
-	r = posix_spawnp(&child, cmdline->path, &actions, NULL,
+	r = posix_spawnp(&child, cmdline->path, &actions, &attr,
 		cmdline->argv, NULL);
 	if (r != 0)
 		goto actions_inited;
 	posix_spawn_file_actions_destroy(&actions);
+	posix_spawnattr_destroy(&attr);
 
 #else /* HAVE_POSIX_SPAWNP */
 
@@ -162,6 +181,16 @@ __archive_create_child(const char *cmd, int *child_stdin, int *child_stdout,
 			_exit(254);
 		if (stdout_pipe[1] != 1 /* stdout */)
 			close(stdout_pipe[1]);
+
+#if HAVE_CLOSEFROM
+		closefrom(3);
+#elif HAVE_CLOSE_RANGE
+		close_range(3, ~0U, 0);
+#elif defined(_SC_OPEN_MAX)
+		for (int i = sysconf(_SC_OPEN_MAX); i > 3;)
+			close(--i);
+#endif
+
 		execvp(cmdline->path, cmdline->argv);
 		_exit(254);
 	}
@@ -183,6 +212,8 @@ __archive_create_child(const char *cmd, int *child_stdin, int *child_stdout,
 actions_inited:
 	errno = r;
 	posix_spawn_file_actions_destroy(&actions);
+attr_inited:
+	posix_spawnattr_destroy(&attr);
 #endif
 stdout_opened:
 	close(stdout_pipe[0]);