The decode_init 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 an AVI file.
https://www.debian.org/security/2018/dsa-4249
https://security.gentoo.org/glsa/202003-65
http://www.securityfocus.com/bid/103732
http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=47b7c68ae54560e2308bdb6be4fb076c73b93081