CVE-2026-66041

FFmpeg 7.0–8.1.2 contains a heap out-of-bounds write in the vf_quirc filter, fixed by commit 4da9812. A crafted PGS/SUP subtitle file with mismatched frame dimensions can cause av_image_copy_plane() to copy data beyond the initial allocation into the undersized libquirc grayscale image buffer, le...