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.
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
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| 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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