Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package libarchive (opens in a new tab)

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Snyk IDSNYK-UBUNTU1604-LIBARCHIVE-15754882
published4 Apr 2026
disclosed19 Mar 2026

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Introduced: 19 Mar 2026

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

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libarchive package and not the libarchive package as distributed by Ubuntu.

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.