CVE-2019-19221

In Libarchive 3.4.0, archive_wstring_append_from_mbs in archive_string.c has an out-of-bounds read because of an incorrect mbrtowc or mbtowc call. For example, bsdtar crashes via a crafted archive.

In Libarchive 3.4.0, archive_wstring_append_from_mbs in archive_string.c has an out-of-bounds read because of an incorrect mbrtowc or mbtowc call. For example, bsdtar crashes via a crafted archive.

In Libarchive 3.4.0, archive_wstring_append_from_mbs in archive_string.c has an out-of-bounds read because of an incorrect mbrtowc or mbtowc call. For example, bsdtar crashes via a crafted archive.

The libarchive programming library can create and read several different streaming archive formats, including GNU tar, cpio, and ISO 9660 CD-ROM images. Libarchive is used notably in the bsdtar utility, scripting language bindings such as python-libarchive, and several popular desktop file managers.

Security Fix(es):

• libarchive: out-of-bounds read in archive_wstring_append_from_mbs in archive_string.c (CVE-2019-19221)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

The updated packages fix several issues including security vulnerabilities:

In Libarchive 3.4.0, archive_wstring_append_from_mbs in archive_string.c has an out-of-bounds read because of an incorrect mbrtowc or mbtowc call. For example, bsdtar crashes via a crafted archive. (CVE-2019-19221)

archive_read_support_format_rar5.c in libarchive before 3.4.2 attempts to unpack a RAR5 file with an invalid or corrupted header (such as a header size of zero), leading to a SIGSEGV or possibly unspecified other impact. (CVE-2020-9308)

These are all security issues fixed in the bsdtar-3.5.1-1.5 package on the GA media of openSUSE Tumbleweed.

This update for libarchive fixes the following issues:

• CVE-2019-19221: Fixed out-of-bounds read caused by incorrect mbrtowc or mbtowc call (bsc#1157569)

• backporting symlink security fixes from 3.5.2:

  • extracting with ACLs modifies ACLs of target (bsc#1192425)
  • modifies file flags of target (bsc#1192426)
  • avoid follow on fixup entries (bsc#1192427)

It was discovered that libarchive incorrectly handled certain archive files. An attacker could possibly use this issue to access sensitive information. (CVE-2019-19221)

It was discovered that libarchive incorrectly handled certain archive files. An attacker could possibly use this issue to cause a crash resulting in a denial of service or possibly unspecified other impact. This issue only affected Ubuntu 19.10. (CVE-2020-9308)

It was discovered that libarchive incorrectly handled certain archive files. An attacker could possibly use this issue to access sensitive information. This issue only affected Ubuntu 14.04 LTS. (CVE-2019-19221)

It was discovered that libarchive incorrectly handled certain RAR archive files. If a user or automated system were tricked into processing a specially crafted RAR archive, an attacker could possibly use this issue to cause libarchive to crash, resulting in a denial of service, or execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2024-20696)

It was discovered that libarchive incorrectly handled certain RAR archive files. An attacker could possibly use this issue to execute arbitrary code or cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2025-5914)

It was discovered that libarchive incorrectly handled certain WARC archive files. If a user or automated system were tricked into processing a specially crafted WARC archive, an attacker could possibly use this issue to cause libarchive to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2025-5916)

It was discovered that libarchive incorrectly handled certain file names when handling prefixes and suffixes. An attacker could possibly use this issue to cause libarchive to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2025-5917)

It was discovered that libarchive could read past the end of file streams when processing input to bsdtar. An attacker could possibly use this issue to cause memory corruption or a denial of service. (CVE-2025-5918)

It was discovered that libarchive incorrectly handled certain TAR archive files. If a user or automated system were tricked into processing a specially crafted TAR archive, an attacker could possibly use this issue to cause libarchive to crash, resulting in a denial of service, or execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2025-25724)

HyungJung Joo discovered that libarchive did not properly limit memory allocation when processing substitution rules in bsdtar. An attacker could possibly use this issue to cause excessive memory consumption, leading to a denial of service. (CVE-2025-60753)

Elhanan Haenel discovered that libarchive could enter an infinite loop when processing crafted RAR5 archives. An attacker could possibly use this issue to cause excessive CPU consumption, leading to a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-4111)