Skip to content
fr Sign in
7.6 High

CVE-2026-56208 Libaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap mode

Description

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.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Exploitable remotely over the network, without an account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Network
Attack complexity
Low
Privileges required
None
Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High

Affected products and versions

Product Affected versions Fixed in
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 9 Versions not published
Red Hat Enterprise Linux AI (RHEL AI) 3 Versions not published
Red Hat Hardened Images 3.14 earliest → < 3.14.0-0.1.hum1 3.14.0-0.1.hum1
Red Hat AI Inference Server Versions not published
Red Hat OpenShift AI (RHOAI) Versions not published
Red Hat Enterprise Linux AI 3.5 for RHEL 9 Versions not published
Red Hat Enterprise Linux 7 Versions not published
Red Hat Enterprise Linux 8 Versions not published
Show the 32 other branches
Product Affected versions Fixed in
Red Hat Enterprise Linux AI 3.3 for RHEL 9 Versions not published
Red Hat Enterprise Linux AI 3.4 for RHEL 9 Versions not published
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Versions not published
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Versions not published
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 10.0 Extended Update Support Versions not published
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 7 Extended Lifecycle Support Versions not published
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Versions not published
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Versions not published
Red Hat Enterprise Linux 8.8 Telecommunications Update Service Versions not published
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9.6 Extended Update Support Versions not published
Red Hat Enterprise Linux Server (v. 7 ELS) Versions not published
Red Hat Enterprise Linux AppStream EUS (v. 10.0) Versions not published
Red Hat Enterprise Linux AppStream (v. 8) Versions not published
Red Hat Enterprise Linux AppStream AUS (v.8.4) Versions not published
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) Versions not published
Red Hat Enterprise Linux AppStream AUS (v.8.6) Versions not published
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) Versions not published
Red Hat Enterprise Linux AppStream E4S (v.8.8) Versions not published
Red Hat Enterprise Linux AppStream TUS (v.8.8) Versions not published
Red Hat Enterprise Linux AppStream E4S (v.9.2) Versions not published
Red Hat Enterprise Linux AppStream E4S (v.9.4) Versions not published
Red Hat Enterprise Linux AppStream EUS (v.9.6) Versions not published
Red Hat Enterprise Linux AppStream (v. 9) Versions not published
Red Hat OpenShift AI 3.4 1791785804 earliest → < 1791785804 1791785804
Red Hat AI Inference Server 3.2 1787884873 earliest → < 1787884873 1787884873
Red Hat AI Inference Server 3.3 1789582776 earliest → < 1789582776 1789582776
Red Hat OpenShift AI 3.3 1789137636 earliest → < 1789137636 1789137636
Red Hat OpenShift AI 3.5 1790703706 earliest → < 1790703706 1790703706
Red Hat Enterprise Linux AI 3.3 1790954179 earliest → < 1790954179 1790954179

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Red Hat Enterprise Linux 10

The 1454 CVEs of Red Hat Enterprise Linux 10 →
CVE-2026-123151 Gdb: gdb: stack buffer overflow in parse_tsv_definition via stale rs->buf tail Not rated CVE-2026-121997 Gdb: gdbserver: heap buffer overflow in cmd_qtdpsrc via qtdpsrc declared/actual length mismatch 8.1 High CVE-2026-121996 Gdb: gdbserver: heap disclosure and wild pointer in gdb_parse_agent_expr via untrusted agent-expression length 8.2 High CVE-2026-121995 Gdb: gdb: stack buffer overflow in parse_tracepoint_definition via stale rs->buf tail 7.5 High
Track this CVE