A Heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 at libavfilter/vf_w3fdif.c in filter16_complex_low, which might lead to memory corruption and other potential consequences.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22031
Reference (s):
- DEBIAN:DSA-4990
- URL: https://www.debian.org/security/2021/dsa-4990
- https://trac.ffmpeg.org/attachment/ticket/8243/gdb-vf_w3fdif_191
- https://trac.ffmpeg.org/ticket/8243
- MLIST:[debian-lts-announce] 20210815 [SECURITY] [DLA 2742-1] ffmpeg security update