CVE-2026-15028

Libarchive: heap overflow oob read while parsing a tar archive contains a pax extended header

CVE-2026-15028 is fixed in 5 products on 1 platform, first by RHSA-2026:69553, released July 8, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
3.9
Low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0020
10th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
bsdtar · almalinux 10 3.7.7-11.el10_2 ALSA-2026:69553 Sep 21, 2026
bsdtar · ol 10 0:3.7.7-11.el10_2 ELSA-2026-69553 Sep 23, 2026
libarchive · Debian 12.15 (bookworm) 3.6.2-1+deb12u5 DEBIAN-CVE-2026-15028 Aug 7, 2026
libarchive · Debian 14 3.8.9-1 DEBIAN-CVE-2026-15028 Aug 7, 2026
libarchive · RHEL 10 3.7.7-11.el10_2 RHSA-2026:69553 Jul 8, 2026
libarchive · almalinux 10 3.7.7-11.el10_2 ALSA-2026:69553 Sep 21, 2026
libarchive · ol 10 0:3.7.7-11.el10_2 ELSA-2026-69553 Sep 23, 2026
libarchive · rocky 10 0:3.7.7-11.el10_2 RLSA-2026:69553 Sep 23, 2026
libarchive-devel · almalinux 10 3.7.7-11.el10_2 ALSA-2026:69553 Sep 21, 2026
libarchive-devel · ol 10 0:3.7.7-11.el10_2 ELSA-2026-69553 Sep 23, 2026
libarchive-tools · Ubuntu 26.04.1 LTS (resolute) 3.8.5-1ubuntu2.2 libarchive-tools 3.8.5-1ubuntu2.2 Jul 10, 2026
libarchive13t64 · Ubuntu 26.04.1 LTS (resolute) 3.8.5-1ubuntu2.2 libarchive13t64 3.8.5-1ubuntu2.2 Jul 10, 2026

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