CVE-2026-15028

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: heap overflow OOB read while parsing a tar archive contains a PAX extended header (CVE-2026-15028)

• libarchive: libarchive: Signed Integer Overflow in archive_write_zip_header (CVE-2026-16517)

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.

A flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute. Successful exploitation could lead to a denial of service, making the system unavailable, or potentially allow for arbitrary code execution, giving the attacker control over the affected system.

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: heap overflow OOB read while parsing a tar archive contains a PAX extended header (CVE-2026-15028)
• libarchive: libarchive: Signed Integer Overflow in archive_write_zip_header (CVE-2026-16517)

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.

A flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute. Successful exploitation could lead to a denial of service, making the system unavailable, or potentially allow for arbitrary code execution, giving the attacker control over the affected system.

Double-free vulnerability in rar5 decompression logic via dangling filtered_buf pointer in init_unpack(). (CVE-2026-14164) Heap overflow oob read while parsing a tar archive contains a pax extended header. (CVE-2026-15028) A null pointer dereference vulnerability exists in the acl parser of libarchive. (CVE-2026-5745) Reading past eof may be triggered for piped file streams. (CVE-2025-5918) An issue was discovered in libarchive bsdtar before version 3.8.1 in function apply_substitution in file tar/subst.c when processing crafted -s substitution rules. This can cause unbounded memory allocation and lead to denial of service (Out-of-Memory crash). (CVE-2025-60753) Infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive. (CVE-2026-4111) Information disclosure via heap out-of-bounds read in rar archive processing. (CVE-2026-4424) Denial of service via malformed iso file processing. (CVE-2026-4426) Arbitrary code execution via integer overflow in iso9660 image processing. (CVE-2026-5121)