Integer Overflow or Wraparound Affecting libarchive package, versions <0:3.5.3-5.el9_4


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.08% (24th percentile)

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  • Snyk IDSNYK-RHEL9-LIBARCHIVE-16111354
  • published20 Apr 2026
  • disclosed30 Mar 2026

Introduced: 30 Mar 2026

NewCVE-2026-5121  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade RHEL:9 libarchive to version 0:3.5.3-5.el9_4 or higher.
This issue was patched in RHSA-2026:8873.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libarchive package and not the libarchive package as distributed by RHEL. See How to fix? for RHEL:9 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.

CVSS Base Scores

version 3.1