{"id":"CVE-2026-125245","title":"FFmpeg through 9.0.2 Memory Leak in MJPEG Hwaccel SOF Decoding","summary":"FFmpeg through 9.0.2 contains a memory leak vulnerability in ff_mjpeg_decode_sof() in libavcodec/mjpegdec.c, which overwrites the hwaccel_picture_private pointer without freeing it. Attackers can supply crafted MJPEG streams with repeate…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-401"],"vendor":"FFmpeg","product":"FFmpeg","affected":["FFmpeg <= 9.0.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-09T20:56:07.780785Z"},"published":"2026-11-09","updated":"2026-11-09","sourceUpdated":"2026-11-09T20:56:49.121Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-125245","references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25231"},{"url":"https://github.com/FFmpeg/FFmpeg/commit/50e9ef29be1766404115b0a4908fa3fd6ed7fa3f","label":"Patch Commit"},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/mjpegdec.c#L826"},{"url":"https://github.com/FFmpeg/FFmpeg"},{"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-memory-leak-in-mjpeg-hwaccel-sof-decoding","label":"VulnCheck Advisory: FFmpeg through 9.0.2 Memory Leak in MJPEG Hwaccel SOF Decoding"}],"tags":["cve.org"],"ingestedAt":"2026-11-09T19:18:02.579Z","slug":"CVE-2026-125245","body":"## Overview\n\nFFmpeg through 9.0.2 contains a memory leak vulnerability in ff_mjpeg_decode_sof() in libavcodec/mjpegdec.c, which overwrites the hwaccel_picture_private pointer without freeing it. Attackers can supply crafted MJPEG streams with repeated SOF markers or failing frames to leak hwaccel private data and hardware buffers under VAAPI or NVDEC decoding.\n\n## Affected\n\n- `FFmpeg <= 9.0.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}