CVE-2026-56211highCWE-787

CVE-2026-56211: high-severity vulnerability in Red Hat AI Inference Server

Libaom: libaom: remote code execution via svc layer context handling with attacker-controlled frames

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.1epss 0.9%
A remote code execution vulnerability was found in libaom, the reference AV1 codec implementation. Insufficient bounds validation in the AV1 encoder's SVC (Scalable Video Coding) layer ID control allows an attacker to supply crafted video frame pixels that overlap with internal encoder layer context structures. In fork-based video processing services, an attacker can use this to hijack the cyclic refresh map pointer, brute-force the process base address via a crash oracle, and redirect control flow to achieve arbitrary command execution. Exploitation requires the target service to use libaom with SVC encoding enabled and accept attacker-supplied video frames.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H
Affected products
Red Hat · Red Hat AI Inference ServerRed Hat · Red Hat AI Inference Server 3.2Red Hat · Red Hat AI Inference Server 3.3Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux AI 3.3Red Hat · Red Hat Enterprise Linux AI 3.3 for RHEL 9Red Hat · Red Hat Enterprise Linux AI 3.4 for RHEL 9Red Hat · Red Hat Enterprise Linux AI 3.5 for RHEL 9Red Hat · Red Hat Hardened ImagesRed Hat · Red Hat OpenShift AI 3.3Red Hat · Red Hat OpenShift AI 3.4Red Hat · Red Hat OpenShift AI 3.5Red Hat · Red Hat OpenShift AI (RHOAI)
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