What’s Vulnerable › Vulnerabilities

CVE-2026-56208: Libaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap mode

Description

A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation. A flaw in the AV1 encoder's Look-Ahead Processing (LAP) mode causes the first-pass stats ring buffer wrap-around guard to be bypassed when g_lag_in_frames is set to 1 or higher. This results in a 232-byte out-of-bounds write on every encoded frame after the second, corrupting adjacent heap objects. An attacker who can influence encoder configuration in a transcoding service or WebRTC session could exploit this to cause a denial of service (process crash) or potentially achieve code execution.

Affected products

How to fix

Upgrade to a fixed version: Red Hat AI Inference Server 3.2 1787772157, 1787860580, 1787884873; Red Hat AI Inference Server 3.3 1789502493, 1789504371, 1789508287, 1789582776; Red Hat Enterprise Linux 10.0 Extended Update Support 0:140.13.0-1.el10_0; Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:140.13.0-1.el7_9; Red Hat Enterprise Linux 8 0:140.13.0-1.el8_10; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:140.13.0-1.el8_4; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:140.13.0-1.el8_4; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:140.13.0-1.el8_6; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:140.13.0-1.el8_6; Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:140.13.0-1.el8_8; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:140.13.0-1.el8_8; Red Hat Enterprise Linux 9 0:140.13.0-1.el9_8. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2026-56208 or the next vulnerability affects your stack