Certain The MPlayer Project products are vulnerable to Buffer Overflow via function mp_getbits() of libmpdemux/mpeg_hdr.c which affects mencoder and mplayer. This affects mecoder SVN-r38374-13.0.1 and mplayer SVN-r38374-13.0.1.
https://trac.mplayerhq.hu/ticket/2405
https://lists.debian.org/debian-lts-announce/2022/12/msg00042.html