CVE-2026-125227

FFmpeg through 9.0.2 contains an integer overflow in cbs jpeg write scan() in libavcodec/cbs jpeg.c that causes a heap buffer overflow on 32-bit builds. Attackers can supply a crafted MJPEG/JPEG stream with a scan of 512 MiB or more, processed by CBS bitstream filters like filter units, to corrupt the heap or crash the application.