CVE-2026-125196

Description

FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in liboapve_encode() in libavcodec/liboapvenc.c that allows attackers to corrupt heap memory by supplying frames larger than the configured encoder dimensions. Attackers can craft videos whose resolution changes mid-stream so that transcoding to APV without rescaling writes attacker-controlled pixel data past the imgb plane buffers.

References

• https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25416
• https://github.com/FFmpeg/FFmpeg
• https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/liboapvenc.c#L578
• https://github.com/FFmpeg/FFmpeg/commit/87cdb6cd6a8d1ec201cb82b30e64d5f946939e23
• https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-heap-buffer-overflow-via-liboapv-apv-encoder-wrapper