FFmpeg before 4.2 has a heap-based buffer overflow in vqa_decode_chunk because of an out-of-array access in vqa_decode_init in libavcodec/vqavideo.c.
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15919
https://github.com/FFmpeg/FFmpeg/commit/02f909dc24b1f05cfbba75077c7707b905e63cd2
https://lists.debian.org/debian-lts-announce/2019/12/msg00003.html
https://lists.debian.org/debian-lts-announce/2020/07/msg00022.html
https://security.gentoo.org/glsa/202003-65