Buffer Overflow vulnerability in FFmpeg 4.2 in the build_diff_map function in libavfilter/vf_fieldmatch.c, which could let a remote malicious user cause a Denial of Service.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22020
Reference (s):
- DEBIAN:DSA-4990
- URL: https://www.debian.org/security/2021/dsa-4990
- http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=ce5274c1385d55892a692998923802023526b765
- https://trac.ffmpeg.org/ticket/8239
- MLIST:[debian-lts-announce] 20210815 [SECURITY] [DLA 2742-1] ffmpeg security update