CVE-2026-125270
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Nov 09, 2026
Vendor
unknown
Description
FFmpeg through 9.0.2 contains a heap out-of-bounds read vulnerability in v4l2_buffer_swframe_to_buf() in libavcodec/v4l2_buffers.c that mishandles frames with negative linesize. Attackers can supply bottom-up AVI or PNM/PFM files that are transcoded to a V4L2 M2M encoder, crashing the application or leaking heap memory into encoded output.
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24328
- https://github.com/FFmpeg/FFmpeg
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/v4l2_buffers.c#L410
- https://github.com/FFmpeg/FFmpeg/commit/b8f159858e2fd29dae4fa34d9e713bbf9bbf190e
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-heap-out-of-bounds-read-in-v4l2-m2m-encoder