CVE-2026-56208
A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation.
Impact
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.
Affected packages
This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.
Weakness classification
References
- NVD record
- CVE.org record
- https://access.redhat.com/errata/RHSA-2026:30814
- https://access.redhat.com/errata/RHSA-2026:42875
- https://access.redhat.com/errata/RHSA-2026:47104
- https://access.redhat.com/errata/RHSA-2026:47105
- https://access.redhat.com/errata/RHSA-2026:51100
- https://access.redhat.com/errata/RHSA-2026:51146
- https://access.redhat.com/errata/RHSA-2026:54180
- https://access.redhat.com/errata/RHSA-2026:54181
- https://access.redhat.com/errata/RHSA-2026:54182
- https://access.redhat.com/errata/RHSA-2026:54185
- https://access.redhat.com/errata/RHSA-2026:54248
- https://access.redhat.com/errata/RHSA-2026:54249
- https://access.redhat.com/errata/RHSA-2026:54259
- https://access.redhat.com/errata/RHSA-2026:54339
- https://access.redhat.com/errata/RHSA-2026:60520
- https://access.redhat.com/errata/RHSA-2026:61627
- https://access.redhat.com/errata/RHSA-2026:61628
- https://access.redhat.com/errata/RHSA-2026:61629
- https://access.redhat.com/errata/RHSA-2026:68634
- https://access.redhat.com/errata/RHSA-2026:68637
- https://access.redhat.com/errata/RHSA-2026:68638
- https://access.redhat.com/errata/RHSA-2026:68639
- https://access.redhat.com/errata/RHSA-2026:68640
- https://access.redhat.com/errata/RHSA-2026:68696
- https://access.redhat.com/errata/RHSA-2026:68697