Double-free vulnerability in libavformat/mov.c in FFMPEG in Google Chrome 41.0.2251.0 allows remote attackers to cause a denial of service (memory corruption and crash) via a crafted .m4a file.
https://lists.debian.org/debian-lts-announce/2019/02/msg00005.html
https://gist.github.com/bittorrent3389/8fee7cdaa73d1d351ee9
https://bugs.chromium.org/p/chromium/issues/detail?id=444539