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7.1 High

CVE-2026-56211 Libaom: libaom: remote code execution via svc layer context handling with attacker-controlled frames

Description

A remote code execution vulnerability was found in libaom, the reference AV1 codec implementation. Insufficient bounds validation in the AV1 encoder's SVC (Scalable Video Coding) layer ID control allows an attacker to supply crafted video frame pixels that overlap with internal encoder layer context structures. In fork-based video processing services, an attacker can use this to hijack the cyclic refresh map pointer, brute-force the process base address via a crash oracle, and redirect control flow to achieve arbitrary command execution. Exploitation requires the target service to use libaom with SVC encoding enabled and accept attacker-supplied video frames.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H

Exploitable remotely over the network, without an account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Network
Attack complexity
High
Privileges required
None
Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
High

Affected products and versions

Product Affected versions Fixed in
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 9 Versions not published
Red Hat Enterprise Linux AI (RHEL AI) 3 Versions not published
Red Hat Hardened Images 3.14 earliest → < 3.14.0-0.1.hum1 3.14.0-0.1.hum1
Red Hat AI Inference Server Versions not published
Red Hat OpenShift AI (RHOAI) Versions not published
Red Hat Enterprise Linux AI 3.5 for RHEL 9 Versions not published
Red Hat Enterprise Linux AI 3.3 for RHEL 9 Versions not published
Red Hat Enterprise Linux AI 3.4 for RHEL 9 Versions not published
Show the 6 other branches
Product Affected versions Fixed in
Red Hat OpenShift AI 3.4 1791785804 earliest → < 1791785804 1791785804
Red Hat AI Inference Server 3.2 1787884873 earliest → < 1787884873 1787884873
Red Hat AI Inference Server 3.3 1789582776 earliest → < 1789582776 1789582776
Red Hat OpenShift AI 3.3 1789137636 earliest → < 1789137636 1789137636
Red Hat OpenShift AI 3.5 1790703706 earliest → < 1790703706 1790703706
Red Hat Enterprise Linux AI 3.3 1790954179 earliest → < 1790954179 1790954179

References

Timeline

  1. Published
  2. Last modified

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