The decode_plane function in libavcodec/utvideodec.c in FFmpeg through 3.4.2 allows remote attackers to cause a denial of service (out of array read) via a crafted AVI file.
https://security.gentoo.org/glsa/202003-65
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/76cc0f0f673353cd4746cd3b83838ae335e5d9ed