libavformat/movenc.c in FFmpeg 3.2 and 4.0.2 allows attackers to cause a denial of service (application crash caused by a divide-by-zero error) with a user crafted audio file when converting to the MOV audio format.
https://www.debian.org/security/2018/dsa-4258
https://github.com/FFmpeg/FFmpeg/commit/fa19fbcf712a6a6cc5a5cfdc3254a97b9bce6582
https://github.com/FFmpeg/FFmpeg/commit/2c0e98a0b478284bdff6d7a4062522605a8beae5