CVE-2026-5121 Affecting libarchive package, versions <0:3.3.3-7.el8_10


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
1.43% (72nd percentile)

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  • Snyk IDSNYK-ALMALINUX8-LIBARCHIVE-16114961
  • published21 Apr 2026
  • disclosed16 Apr 2026

Introduced: 16 Apr 2026

CVE-2026-5121  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 libarchive to version 0:3.3.3-7.el8_10 or higher.
This issue was patched in ALSA-2026:8534.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libarchive package and not the libarchive package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.

References

CVSS Base Scores

version 3.1