CVE-2026-56209

Fixed in a distro release EPSS <1%CVSS 7.1

An arbitrary address write vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC (Scalable Video Coding) layer ID control function allows an attacker to inject an arbitrary pointer into the cyclic refresh map field via crafted image pixel values. The encoder then writes approximately 1,200 bytes at the attacker-controlled address. This is fully deterministic and does not require a separate information leak. An attacker who can supply frames to a network-facing libaom encoder with SVC enabled could exploit this for denial of service or potential code execution.

Published 2026-06-19 · CVE record · OSV

Products: Red Hat Enterprise Linux AI 3.3 for RHEL 9, Red Hat Enterprise Linux AI 3.4 for RHEL 9, Red Hat Enterprise Linux AI 3.5 for RHEL 9, Red Hat AI Inference Server 3.2, Red Hat AI Inference Server 3.3, Red Hat Enterprise Linux AI 3.3, Red Hat Hardened Images, Red Hat OpenShift AI 3.3, Red Hat OpenShift AI 3.4, Red Hat OpenShift AI 3.5, Red Hat AI Inference Server, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift AI (RHOAI)

Distro releases