Description
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.
References (4)
Core 4
Core References
Exploit, Issue Tracking, Vendor Advisory x_refsource_misc
https://trac.ffmpeg.org/ticket/8239
Patch x_refsource_misc
http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=ce5274c1385d55892a692998923802023526b765
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2021/dsa-4990
Scores
CVSS v3
6.5
EPSS
0.0233
EPSS Percentile
84.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Details
CWE
CWE-120
Status
published
Products (3)
debian/debian_linux
9.0
debian/debian_linux
10.0
ffmpeg/ffmpeg
4.2
Published
May 26, 2021
Tracked Since
Feb 18, 2026