CVE-2025-5915: Libarchive

Medium severity, CVSS 6.6. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability has been identified in the libarchive library. This flaw can lead to a heap buffer over-read due to the size of a filter block potentially exceeding the Lempel-Ziv-Storer-Schieber (LZSS) window. This means the library may attempt to read beyond the allocated memory buffer, which can result in unpredictable program behavior, crashes (denial of service), or the disclosure of sensitive information from adjacent memory regions.

Affected products

• Libarchive Libarchive: before 3.8.0 (fixed in 3.8.0)
• Red Hat Enterprise Linux: version 6.0 only; version 7.0 only; version 8.0 only; version 9.0 only; version 10.0 only
• Red Hat Openshift Container Platform: version 4.0 only

Published 2025-06-09. Last modified 2026-09-01.