An issue has been found in mpv, a video player based on MPlayer/mplayer2. Due to a use after free an attacker coudl execute arbitrary code or crash the program via the ao_c parameter.
For Debian 10 buster, this problem has been fixed in version 0.29.1-1+deb10u1.
We recommend that you upgrade your mpv packages.
For the detailed security status of mpv please refer to its security tracker page at: https://security-tracker.debian.org/tracker/mpv
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS