CVE-2026-125245
FFmpeg through 9.0.2 Memory Leak in MJPEG Hwaccel SOF Decoding
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 repeated SOF markers or failing frames to leak hwaccel private data and hardware buffers under VAAPI or NVDEC decoding.
Public vulnerability details
- Record state
- Published
- Published (UTC)
- Last updated (UTC)
- Assigned by
- VulnCheck
- CVSS score
- 5.7 (CVSS v4.0, from VulnCheck)
- Severity
- MEDIUM
- CISA KEV
- No KEV entry in this record. This does not show that the CVE is absent from the KEV catalog.
- Additional data from
- CISA-ADP
FHE assessment
No FHE assessment is available in this application yet. This does not mean FHE cannot mitigate an impact of this CVE.
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25231 (VulnCheck)
- Patch Commit (VulnCheck)
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/mjpegdec.c#L826 (VulnCheck)
- https://github.com/FFmpeg/FFmpeg (VulnCheck)
- VulnCheck Advisory: FFmpeg through 9.0.2 Memory Leak in MJPEG Hwaccel SOF Decoding (VulnCheck)
Source
CVE JSON 5.2 record from the CVE List archive 2026-11-09_delta_CVEs_at_end_of_day.zip, which covers changes through . Imported .