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 …
Summary
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 …
In-depth triage · Auto channel
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Lint boundary warnings (1)
The following non-blocking warnings were raised during the lint phase of this triage (e.g. reference URLs not yet on the allowlist). They do not affect entry usability and are disclosed for transparency (see DR-002).
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REF_URL_NOT_ALLOWLISTEDurl not in allowlist: https://aomedia.googlesource.com/aom/+/243f8ae84b
Sources
- NVD DATABASE
Original Links
- https://access.redhat.com/errata/RHSA-2026:30814
- https://access.redhat.com/security/cve/CVE-2026-56208
- https://aomedia.googlesource.com/aom/+/243f8ae84b
- https://bugzilla.redhat.com/show_bug.cgi?id=2490799
- https://issues.chromium.org/issues/504317456
- https://access.redhat.com/errata/RHSA-2026:30814
- https://access.redhat.com/security/cve/CVE-2026-56208
- https://bugzilla.redhat.com/show_bug.cgi?id=2490799
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-56208.json
Timeline
- nvd_ingest NVD