7.6

CVE-2026-56208

Libaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap mode

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.
Daten sind bereitgestellt durch das CVE Programm von Authorized Data Publishers (ADP) (Unstrukturiert)
HerstellerRed Hat
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Produkt Red Hat Hardened Images
Default Statusaffected
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Produkt Red Hat AI Inference Server
Default Statusaffected
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Produkt Red Hat Enterprise Linux 9
Default Statusaffected
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Produkt Red Hat Enterprise Linux AI (RHEL AI) 3
Default Statusaffected
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Produkt Red Hat OpenShift AI (RHOAI)
Default Statusaffected
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Produkt Red Hat Enterprise Linux 10
Default Statusunaffected
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.28% 0.192
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
secalert@redhat.com 7.6 2.8 4.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.6 2.8 4.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
CWE-122 Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

https://aomedia.googlesource.com/aom/+/243f8ae84b
https://bugzilla.redhat.com/show_bug.cgi?id=2490799
https://issues.chromium.org/issues/504317456
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-56208.json
https://access.redhat.com/errata/RHSA-2026:30814
https://access.redhat.com/security/cve/CVE-2026-56208