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CVE-2026-56208 on CTRL-OS 26.05

Aliases: CVE-2026-56208

Packages: libaom

Status: Plausible

Advisory Information

A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation. A flaw in the AV1 encoder's Look-Ahead Processing (LAP) mode causes the first-pass stats ring buffer wrap-around guard to be bypassed when g_lag_in_frames is set to 1 or higher. This results in a 232-byte out-of-bounds write on every encoded frame after the second, corrupting adjacent heap objects. An attacker who can influence encoder configuration in a transcoding service or WebRTC session could exploit this to cause a denial of service (process crash) or potentially achieve code execution.

Updates

2026-08-07 10:16 CEST

Metadata changes:

  • Status for package libaom: “Plausible”

2026-08-07 10:14 CEST

Metadata changes:

  • Status for package libaom: “Acknowledged”