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CVE-2026-4426

MEDIUM CVSS: 6.5 Published: 2026-03-19 Modified: 2026-06-17

Description

A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote attacker can exploit this by supplying a specially crafted ISO file. This can lead to incorrect memory allocation and potential application crashes, resulting in a denial-of-service (DoS) condition.

Affected Platforms

Redhat Hardened ImagesRedhat Openshift Container PlatformRedhat Enterprise LinuxLibarchive Libarchive

Weakness Type

CWE-1335

References