{"id":"CVE-2020-21697","details":"A heap-use-after-free in the mpeg_mux_write_packet function in libavformat/mpegenc.c of FFmpeg 4.2 allows to cause a denial of service (DOS) via a crafted avi file.","modified":"2026-03-14T00:45:33.886479Z","published":"2021-08-10T21:15:07.803Z","related":["SUSE-SU-2021:2919-1","SUSE-SU-2021:2929-1","openSUSE-SU-2021:2919-1"],"references":[{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4998"},{"type":"FIX","url":"https://trac.ffmpeg.org/ticket/8188"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ffmpeg/ffmpeg","events":[{"introduced":"0"},{"last_affected":"517573a67088b5c7a25c18373434e3448892ee93"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"4.2-NA"}]}}],"versions":["N","n0.11-dev","n0.12-dev","n0.8","n1.1-dev","n1.2-dev","n1.3-dev","n2.0","n2.1-dev","n2.2-dev","n2.3-dev","n2.4-dev","n2.5-dev","n2.6-dev","n2.7-dev","n2.8-dev","n2.9-dev","n3.1-dev","n3.2-dev","n3.3-dev","n3.4-dev","n3.5-dev","n4.1-dev","n4.2-dev"],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"11.0"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-21697.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}