Out-of-bounds Read Affecting libarchive package, versions <0:3.7.7-5.el10_0


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.11% (66th percentile)

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  • Snyk IDSNYK-RHEL10-LIBARCHIVE-16110458
  • published20 Apr 2026
  • disclosed19 Mar 2026

Introduced: 19 Mar 2026

CVE-2026-4424  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade RHEL:10 libarchive to version 0:3.7.7-5.el10_0 or higher.
This issue was patched in RHSA-2026:8865.

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:10 relevant fixed versions and status.

A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.

References

CVSS Base Scores

version 3.1