CVE-2026-56208
Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-122
Desbordamiento de búfer basado en memoria dinámica (Heap)
Fecha de publicación:
19/06/2026
Última modificación:
29/07/2026
Descripción
*** Pendiente de traducción *** 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.
Impacto
Puntuación base 3.x
7.60
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://access.redhat.com/errata/RHSA-2026:30814
- https://access.redhat.com/errata/RHSA-2026:42875
- https://access.redhat.com/errata/RHSA-2026:47105
- 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/errata/RHSA-2026:42875
- https://access.redhat.com/errata/RHSA-2026:47105
- 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