A heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 at libavfilter/vf_colorconstancy.c: in slice_get_derivative, which crossfade_samples_fltp, which might lead to memory corruption and other potential consequences.Referenceshttps://trac.ffmpeg.org/ticket/8250http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=a7fd1279703683ebb548ef7baa2f1519994496aehttps://www.debian.org/security/2021/dsa-4990
