CVE-2026-56209 Libaom: libaom: arbitrary address write via svc layer context oob and cyclic refresh map pointer hijack
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.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:HExploitable 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
- Low
- Privileges required
- None
- Interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- 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 Hide 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 |