High [CVE-2026-8461] Remote code execution via out-of-bounds write in MagicYUV decoder
This high-severity Red Hat Linux advisory covers CVE-2026-8461 affecting Red Hat Enterprise Linux AI 3.5 for RHEL 9, Red Hat AI Inference Server, Red Hat Enterprise Linux AI (RHEL AI) 3.
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Summary
An out-of-bounds write vulnerability in FFmpeg's libavcodec library, specifically in the MagicYUV decoder, allows denial-of-service and, in some cases, can be exploited for remote code execution. This issue affects FFmpeg before version 8.1.2.
In other scenarios, it may lead to a denial-of-service, making the system unavailable. A remote attacker could exploit this flaw by providing a specially crafted media file, potentially leading to arbitrary code execution or a denial of service on affected Red Hat Enterprise Linux AI and Red Hat OpenShift AI systems.
The impact is considered Important due to the potential for remote code execution without requiring complex attack vectors. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Weakness: CWE-787. Affected Red Hat products: Red Hat Enterprise Linux AI 3.5 for RHEL 9; Red Hat AI Inference Server; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI).
Red Hat fixing advisory: RHSA-2026:43711.
- < 8.1.2
Official advisory · high-confidence parse· fetched 16 days ago·verify at source
- ffmpeg-0:6.1.6-1.el9ai
- RHSA-2026:43711
Official advisory · high-confidence parse· fetched 16 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 16 days ago·verify at source
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