Double Free Affecting libarchive-devel package, versions <0:3.5.3-11.el9_8


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.39% (32nd percentile)

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  • Snyk IDSNYK-ALMALINUX9-LIBARCHIVEDEVEL-18610041
  • published11 Aug 2026
  • disclosed10 Aug 2026

Introduced: 10 Aug 2026

NewCVE-2026-14164  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 libarchive-devel to version 0:3.5.3-11.el9_8 or higher.
This issue was patched in ALSA-2026:52674.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libarchive-devel package and not the libarchive-devel package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

A double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service.

CVSS Base Scores

version 3.1