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

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AOMedia libaom是AOMedia组织开源的一个视频编码库。 AOMedia libaom存在缓冲区错误漏洞，该漏洞源于libaom的堆缓冲区溢出问题，即AV1编码器的Look-Ahead Processing (LAP)模式在g_lag_in_frames设置为1或更高时绕过首遍统计循环缓冲区环绕保护，导致在每帧编码后发生232字节越界写入，损坏相邻堆对象，攻击者可通过影响编码器配置造成拒绝服务或潜在代码执行。

CVSS 7.6 · High EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 79

VendorProduct Version RangeStatus
Red Hat Red Hat AI Inference Server any affected
any affected
any affected
any affected
any affected
any affected
any affected
Red Hat Red Hat AI Inference Server 3.2 1787860580< * unaffected
1787772157< * unaffected
1787884873< * unaffected
Red Hat Red Hat AI Inference Server 3.3 1789508287< * unaffected
1789502493< * unaffected
1789504371< * unaffected
1789582776< * unaffected
Red Hat Red Hat Enterprise Linux 10 any affected
any unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:140.13.0-1.el10_0< * unaffected
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:140.13.0-1.el7_9< * unaffected
Red Hat Red Hat Enterprise Linux 8 0:140.13.0-1.el8_10< * unaffected
any affected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:140.13.0-1.el8_4< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:140.13.0-1.el8_4< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:140.13.0-1.el8_6< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:140.13.0-1.el8_6< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:140.13.0-1.el8_8< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:140.13.0-1.el8_8< * unaffected
Red Hat Red Hat Enterprise Linux 9 0:140.13.0-1.el9_8< * unaffected
any affected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:140.13.0-1.el9_2< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:140.13.0-1.el9_4< * unaffected
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:140.13.0-1.el9_6< * unaffected
Red Hat Red Hat Enterprise Linux AI 3.3 for RHEL 9 0:3.14.0-1.el9ai< * unaffected
Red Hat Red Hat Enterprise Linux AI 3.4 for RHEL 9 0:3.14.0-1.el9ai< * unaffected
Red Hat Red Hat Enterprise Linux AI 3.5 for RHEL 9 0:3.14.0-1.el9ai< * unaffected
Red Hat Red Hat Hardened Images 3.14.0-0.1.hum1< * unaffected
Red Hat Red Hat OpenShift AI (RHOAI) any unaffected
any unaffected
any unaffected
any unaffected
any unaffected
any unaffected
any unaffected
any unaffected
… +7 more rows
Red Hat Red Hat OpenShift AI 3.3 1789137552< * unaffected
1789137548< * unaffected
1789137636< * unaffected
1789137548< * unaffected
1789137548< * unaffected
1789137641< * unaffected
1789137607< * unaffected
1789137636< * unaffected
Red Hat Red Hat OpenShift AI 3.4 1786611800< * unaffected
1787076778< * unaffected
1787077779< * unaffected
1787076481< * unaffected
1788197680< * unaffected
1788197530< * unaffected
1788197632< * unaffected
1788197747< * unaffected
… +4 more rows
Red Hat Red Hat OpenShift AI 3.5 1788198404< * unaffected
1788198407< * unaffected
1788197492< * unaffected
1788197542< * unaffected
1788197975< * unaffected
1788197512< * unaffected
1788197688< * unaffected
1788197385< * unaffected
… +1 more rows
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I. Basic Information for CVE-2026-56208

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
Libaom: libaom: heap buffer overflow in av1 encoder first-pass stats buffer via lap mode
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
AOMedia libaom 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AOMedia libaom是AOMedia组织开源的一个视频编码库。 AOMedia libaom存在缓冲区错误漏洞，该漏洞源于libaom的堆缓冲区溢出问题，即AV1编码器的Look-Ahead Processing (LAP)模式在g_lag_in_frames设置为1或更高时绕过首遍统计循环缓冲区环绕保护，导致在每帧编码后发生232字节越界写入，损坏相邻堆对象，攻击者可通过影响编码器配置造成拒绝服务或潜在代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:140.13.0-1.el10_0 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:140.13.0-1.el7_9 ~ * cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 8 0:140.13.0-1.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:140.13.0-1.el8_4 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:140.13.0-1.el8_4 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:140.13.0-1.el8_6 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 0:140.13.0-1.el8_6 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:140.13.0-1.el8_8 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:140.13.0-1.el8_8 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 9 0:140.13.0-1.el9_8 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:140.13.0-1.el9_2 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:140.13.0-1.el9_4 ~ * cpe:/a:redhat:rhel_e4s:9.4::appstream
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:140.13.0-1.el9_6 ~ * cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat Red Hat Enterprise Linux AI 3.3 for RHEL 9 0:3.14.0-1.el9ai ~ * cpe:/a:redhat:enterprise_linux_ai:3.3::el9
Red Hat Red Hat Enterprise Linux AI 3.4 for RHEL 9 0:3.14.0-1.el9ai ~ * cpe:/a:redhat:enterprise_linux_ai:3.4::el9
Red Hat Red Hat Enterprise Linux AI 3.5 for RHEL 9 0:3.14.0-1.el9ai ~ * cpe:/a:redhat:enterprise_linux_ai:3.5::el9
Red Hat Red Hat AI Inference Server 3.2 1787860580 ~ * cpe:/a:redhat:ai_inference_server:3.2::el9
Red Hat Red Hat AI Inference Server 3.2 1787772157 ~ * cpe:/a:redhat:ai_inference_server:3.2::el9
Red Hat Red Hat AI Inference Server 3.2 1787884873 ~ * cpe:/a:redhat:ai_inference_server:3.2::el9
Red Hat Red Hat AI Inference Server 3.3 1789508287 ~ * cpe:/a:redhat:ai_inference_server:3.3::el9
Red Hat Red Hat AI Inference Server 3.3 1789502493 ~ * cpe:/a:redhat:ai_inference_server:3.3::el9
Red Hat Red Hat AI Inference Server 3.3 1789504371 ~ * cpe:/a:redhat:ai_inference_server:3.3::el9
Red Hat Red Hat AI Inference Server 3.3 1789582776 ~ * cpe:/a:redhat:ai_inference_server:3.3::el9
Red Hat Red Hat Hardened Images 3.14.0-0.1.hum1 ~ * cpe:/a:redhat:hummingbird:1
Red Hat Red Hat OpenShift AI 3.3 1789137552 ~ * cpe:/a:redhat:openshift_ai:3.3::el9
Red Hat Red Hat OpenShift AI 3.3 1789137548 ~ * cpe:/a:redhat:openshift_ai:3.3::el9
Red Hat Red Hat OpenShift AI 3.3 1789137636 ~ * cpe:/a:redhat:openshift_ai:3.3::el9
Red Hat Red Hat OpenShift AI 3.3 1789137548 ~ * cpe:/a:redhat:openshift_ai:3.3::el9
Red Hat Red Hat OpenShift AI 3.3 1789137548 ~ * cpe:/a:redhat:openshift_ai:3.3::el9
Red Hat Red Hat OpenShift AI 3.3 1789137641 ~ * cpe:/a:redhat:openshift_ai:3.3::el9

II. Public POCs for CVE-2026-56208

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III. Intelligence Information for CVE-2026-56208

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Patches & Fixes for CVE-2026-56208 (1)

Vendor Advisories for CVE-2026-56208 (48)

Other References for CVE-2026-56208 (1)

Other References for CVE-2026-56208 (1)

Same Patch Batch · Red Hat · 2026-06-19 · 6 CVEs total

CVE-2026-56209 7.1 HIGH Libaom: libaom: arbitrary address write via svc layer context oob and cyclic refresh map p
CVE-2026-56210 7.1 HIGH Libaom: libaom: heap-buffer-overflow read via missing bounds check in ctrl_set_layer_id
CVE-2026-56211 7.1 HIGH Libaom: libaom: remote code execution via svc layer context handling with attacker-control
CVE-2026-12706 6.5 MEDIUM Ffmpeg: ffmpeg: heap use-after-free read in rasc decoder decode_move()
CVE-2026-12726 6.3 MEDIUM Awx: automation-controller: awx: github webhook second-order ssrf via unvalidated statuses

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10.0 Extended Update Support
Same vendor: Red Hat
Same weakness: CWE-122

V. Comments for CVE-2026-56208

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