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Vulnerability · Published Jun 19, 2026 · Assigned by redhat

CVE-2026-56209Libaom: libaom: arbitrary address write via svc layer context oob and cyclic refresh map pointer hijack

High 7.1

In plain English

A high-severity out-of-bounds write in Red Hat AI Inference Server from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.6%top 49.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12aom3.6.0-1+deb12u3DEBIAN-CVE-2026-56209
Debian:13aom3.12.1-1+deb13u1DEBIAN-CVE-2026-56209
Debian:14aom3.14.1-1DEBIAN-CVE-2026-56209
Ubuntu:24.04:LTSaom3.8.2-2ubuntu0.2UBUNTU-CVE-2026-56209
Ubuntu:24.04:LTSaom3.8.2-2ubuntu0.2USN-8772-1
Ubuntu:25.10aomno fix listedUBUNTU-CVE-2026-56209
Ubuntu:26.04:LTSaom3.13.1-2ubuntu0.1USN-8772-1
Ubuntu:26.04:LTSaom3.13.1-2ubuntu0.1UBUNTU-CVE-2026-56209

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux AI 3.3 for RHEL 9 see references
Red Hat Red Hat Enterprise Linux AI 3.4 for RHEL 9 see references
Red Hat Red Hat Enterprise Linux AI 3.5 for RHEL 9 see references
Red Hat Red Hat AI Inference Server 3.2 see references
Red Hat Red Hat AI Inference Server 3.2 see references
Red Hat Red Hat AI Inference Server 3.2 see references
Red Hat Red Hat AI Inference Server 3.3 see references
Red Hat Red Hat AI Inference Server 3.3 see references
Red Hat Red Hat AI Inference Server 3.3 see references
Red Hat Red Hat AI Inference Server 3.3 see references
Red Hat Red Hat Enterprise Linux AI 3.3 see references
Red Hat Red Hat Enterprise Linux AI 3.3 see references
Red Hat Red Hat Enterprise Linux AI 3.3 see references
Red Hat Red Hat Enterprise Linux AI 3.3 see references
Red Hat Red Hat Enterprise Linux AI 3.3 see references
Red Hat Red Hat Enterprise Linux AI 3.3 see references
Red Hat Red Hat Enterprise Linux AI 3.3 see references
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat OpenShift AI 3.3 see references
Red Hat Red Hat OpenShift AI 3.3 see references
Red Hat Red Hat OpenShift AI 3.3 see references
Red Hat Red Hat OpenShift AI 3.3 see references
Red Hat Red Hat OpenShift AI 3.3 see references
Red Hat Red Hat OpenShift AI 3.3 see references
Red Hat Red Hat OpenShift AI 3.3 see references
Red Hat Red Hat OpenShift AI 3.3 see references
Red Hat Red Hat OpenShift AI 3.4 see references
Red Hat Red Hat OpenShift AI 3.4 see references
Red Hat Red Hat OpenShift AI 3.4 see references
Red Hat Red Hat OpenShift AI 3.4 see references

Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

References