Remote code execution via out-of-bounds write in MagicYUV decoder

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 vulnerability is associated with the file libavcodec/magicyuv.C. This issue affects FFmpeg before version 8.1.2. A flaw was found in FFmpeg's libavcodec library. This out-of-bounds write vulnerability, specifically within the MagicYUV decoder, could allow a remote attacker to execute arbitrary code on the affected system. In other scenarios, it may lead to a denial-of-service, making the system unavailable. This is an Important out-of-bounds write vulnerability in the FFmpeg libavcodec library's MagicYUV decoder. 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. No fixing RHSA erratum has published yet; monitor the Red Hat CVE page and patch when it ships.