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Update Summary

USN-8772-1 addresses multiple security issues in AOM for Ubuntu Server 26.04 LTS. The fixes cover heap buffer overflow and memory corruption flaws that could lead to denial of service or arbitrary code execution. Reference IDs: CVE-2026-56208, CVE-2026-56209, CVE-2026-56210, CVE-2026-56211.

Update Details

Security

  • Fixed a heap buffer overflow in Look-Ahead Processing (LAP) first-pass statistics handling that could lead to denial of service or arbitrary code execution (CVE-2026-56208).
  • Fixed incorrect validation of spatial and temporal layer IDs in SVC encoder controls, which could allow arbitrary memory writes, out-of-bounds heap reads, or arbitrary code execution (CVE-2026-56209, CVE-2026-56210, CVE-2026-56211).

Hints

  • A standard system update installs the necessary fixes.
  • For Ubuntu Server 26.04 LTS, update aom-tools, libaom-dev, and libaom3 to version 3.13.1-2ubuntu0.1.

Product Information

Vendor: Canonical

Product: Ubuntu Server

Product type: Software

Application category: Utilities

Platform: Linux

Variant: 26.04 LTS (Resolute Raccoon)

Version: 3.13.1-2ubuntu0.1

Vendor release date: Sep 16, 2026

Original release notes: View on vendor site

Published on updatealert.io: Sep 17, 2026

Description: Server operating system for Linux infrastructure and workloads.