High [CVE-2026-75144] Memory corruption via crafted Dirac data unit
This high-severity Red Hat Linux advisory covers CVE-2026-75144 affecting Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI).
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Summary
FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit.
The packetizer copies an input-derived data unit or fragment size into a fixed-size buffer without an upper bound check, causing a heap buffer overflow when the crafted input is packetized for RTP output. A flaw was found in FFmpeg.
This can lead to a denial of service. The ffmpeg package is not shipped in base Red Hat Enterprise Linux.
It is available through EPEL, Red Hat Enterprise Linux AI, and as a bundled dependency in Red Hat OpenShift AI container images. The vulnerable code resides in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c), which is compiled and shipped in all FFmpeg builds across these products.
This is a heap buffer overflow that could potentially lead to code execution. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Weakness: CWE-120. Affected Red Hat products: Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI).
Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 57 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 57 minutes ago·verify at source
Mitigation checklist
- No mitigation is currently available for this flaw.
Official advisory · high-confidence parse· fetched 57 minutes ago·verify at source
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