Libaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap mode
Summary
| CVE | CVE-2026-56208 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-19 17:16:30 UTC |
| Updated | 2026-09-01 13:19:49 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.6 HIGH from ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
EPSS: 0.004210000 probability, percentile 0.352310000 (date 2026-09-02)
Problem Types: CWE-122 | CWE-122 Heap-based Buffer Overflow
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | CVSS | 7.6 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H |
| 3.1 | [email protected] | Secondary | 7.6 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H |
| 3.1 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | Secondary | 7.6 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H |
| 3.1 | CNA | CVSS | 7.6 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
RequiredScope
UnchangedConfidentiality
LowIntegrity
LowAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | unaffected 0:140.13.0-1.el10_0 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | unaffected 0:140.13.0-1.el7_9 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | unaffected 0:140.13.0-1.el8_10 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | unaffected 0:140.13.0-1.el8_4 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | unaffected 0:140.13.0-1.el8_4 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | unaffected 0:140.13.0-1.el8_6 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | unaffected 0:140.13.0-1.el8_6 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | unaffected 0:140.13.0-1.el8_8 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.8 Update Services For SAP Solutions | unaffected 0:140.13.0-1.el8_8 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:140.13.0-1.el9_8 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.2 Update Services For SAP Solutions | unaffected 0:140.13.0-1.el9_2 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.4 Update Services For SAP Solutions | unaffected 0:140.13.0-1.el9_4 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | unaffected 0:140.13.0-1.el9_6 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux AI 3.3 For RHEL 9 | unaffected 0:3.14.0-1.el9ai * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux AI 3.4 For RHEL 9 | unaffected 0:3.14.0-1.el9ai * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux AI 3.5 For RHEL 9 | unaffected 0:3.14.0-1.el9ai * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server 3.2 | unaffected 1787860580 * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server 3.2 | unaffected 1787772157 * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server 3.2 | unaffected 1787884873 * rpm | Not specified |
| CNA | Red Hat | Red Hat Hardened Images | unaffected 3.14.0-0.1.hum1 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI 3.4 | unaffected 1786611800 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI 3.4 | unaffected 1787076778 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI 3.4 | unaffected 1787077779 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI 3.4 | unaffected 1787076481 * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | unaffected 0:140.13.0-1.el10_0 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | unaffected 0:140.13.0-1.el7_9 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8 | unaffected 0:140.13.0-1.el8_10 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | unaffected 0:140.13.0-1.el8_4 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | unaffected 0:140.13.0-1.el8_4 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | unaffected 0:140.13.0-1.el8_6 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | unaffected 0:140.13.0-1.el8_6 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | unaffected 0:140.13.0-1.el8_8 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8.8 Update Services For SAP Solutions | unaffected 0:140.13.0-1.el8_8 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:140.13.0-1.el9_8 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9.2 Update Services For SAP Solutions | unaffected 0:140.13.0-1.el9_2 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9.4 Update Services For SAP Solutions | unaffected 0:140.13.0-1.el9_4 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | unaffected 0:140.13.0-1.el9_6 * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI 3.3 For RHEL 9 | unaffected 0:3.14.0-1.el9ai * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI 3.4 For RHEL 9 | unaffected 0:3.14.0-1.el9ai * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AI 3.5 For RHEL 9 | unaffected 0:3.14.0-1.el9ai * rpm | Not specified |
| ADP | Red Hat | Red Hat Hardened Images | unaffected 3.14.0-0.1.hum1 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 3.4 | unaffected 1786611800 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 3.4 | unaffected 1787076778 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 3.4 | unaffected 1787077779 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 3.4 | unaffected 1787076481 * rpm | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| aomedia.googlesource.com/aom/+/243f8ae84b | [email protected] | aomedia.googlesource.com | |
| access.redhat.com/errata/RHSA-2026:54182 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-56208 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:61627 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:54248 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:61628 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:42875 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:47105 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:54185 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:54180 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:51100 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:61629 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:54249 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:54181 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:47104 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | bugzilla.redhat.com | |
| security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-56208.json | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | security.access.redhat.com | |
| issues.chromium.org/issues/504317456 | [email protected] | issues.chromium.org | |
| access.redhat.com/errata/RHSA-2026:54339 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:51146 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:54259 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:30814 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:60520 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Red Hat would like to thank The FuzzAnything Team (FuzzAnything) for reporting this issue. (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-06-19T00:00:00.000Z | Reported to Red Hat. |
| CNA | 2026-06-19T00:00:00.000Z | Made public. |
| ADP | 2026-06-19T00:00:00.000Z | Reported to Red Hat. |
| ADP | 2026-06-19T00:00:00.000Z | Made public. |
Solutions
ADP: RHSA-2026:54248: Red Hat Enterprise Linux Server (v. 7 ELS)
ADP: RHSA-2026:51100: Red Hat Enterprise Linux AI 3.3 for RHEL 9
ADP: RHSA-2026:51146: Red Hat Enterprise Linux AI 3.4 for RHEL 9
ADP: RHSA-2026:42875: Red Hat Enterprise Linux AI 3.5 for RHEL 9
ADP: RHSA-2026:54181: Red Hat Enterprise Linux AppStream EUS (v. 10.0)
ADP: RHSA-2026:47105: Red Hat Enterprise Linux AppStream (v. 8)
ADP: RHSA-2026:54180: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
ADP: RHSA-2026:54259: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
ADP: RHSA-2026:54339: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)
ADP: RHSA-2026:54185: Red Hat Enterprise Linux AppStream E4S (v.9.2)
ADP: RHSA-2026:54182: Red Hat Enterprise Linux AppStream E4S (v.9.4)
ADP: RHSA-2026:54249: Red Hat Enterprise Linux AppStream EUS (v.9.6)
ADP: RHSA-2026:47104: Red Hat Enterprise Linux AppStream (v. 9)
ADP: RHSA-2026:61628: Red Hat AI Inference Server 3.2
ADP: RHSA-2026:61627: Red Hat AI Inference Server 3.2
ADP: RHSA-2026:61629: Red Hat AI Inference Server 3.2
ADP: RHSA-2026:30814: Red Hat Hardened Images
ADP: RHSA-2026:60520: Red Hat OpenShift AI 3.4
Workarounds
CNA: There is no complete mitigation for this vulnerability. The following measures can reduce risk: 1. If using libaom as a standalone encoder library, avoid setting g_lag_in_frames to values >= 1 when processing untrusted input, or validate all encoder configuration parameters before passing them to the libaom API. 2. For Firefox and Thunderbird, ensure browsers are updated to versions that include the patched libaom (v3.14.0 or later). 3. For standalone libaom deployments (RHEL-AI, Hummingbird), restrict access to the encoding service to trusted clients only. 4. Apply network-level access controls to limit who can submit video for encoding.
ADP: There is no complete mitigation for this vulnerability. The following measures can reduce risk: 1. If using libaom as a standalone encoder library, avoid setting g_lag_in_frames to values >= 1 when processing untrusted input, or validate all encoder configuration parameters before passing them to the libaom API. 2. For Firefox and Thunderbird, ensure browsers are updated to versions that include the patched libaom (v3.14.0 or later). 3. For standalone libaom deployments (RHEL-AI, Hummingbird), restrict access to the encoding service to trusted clients only. 4. Apply network-level access controls to limit who can submit video for encoding.
There are currently no legacy QID mappings associated with this CVE.