{"id":"CVE-2021-38171","details":"adts_decode_extradata in libavformat/adtsenc.c in FFmpeg 4.4 does not check the init_get_bits return value, which is a necessary step because the second argument to init_get_bits can be crafted.","modified":"2026-05-18T05:53:05.603450540Z","published":"2021-08-21T17:15:07.700Z","related":["SUSE-SU-2021:3193-1","SUSE-SU-2021:3212-1","openSUSE-SU-2021:3193-1","openSUSE-SU-2024:10754-1"],"database_specific":{"unresolved_ranges":[{"vendor_product":"debian:debian_linux","extracted_events":[{"last_affected":"9.0"},{"last_affected":"10.0"},{"last_affected":"11.0"}],"source":"CPE_FIELD","cpes":["cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"]}]},"references":[{"type":"WEB","url":"https://patchwork.ffmpeg.org/project/ffmpeg/patch/AS8P193MB12542A86E22F8207EC971930B6F19%40AS8P193MB1254.EURP193.PROD.OUTLOOK.COM/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/11/msg00012.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202312-14"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4990"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4998"},{"type":"FIX","url":"https://github.com/FFmpeg/FFmpeg/commit/9ffa49496d1aae4cbbb387aac28a9e061a6ab0a6"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.ffmpeg.org/ffmpeg.git","events":[{"introduced":"0"},{"last_affected":"c5079bf3bccd24bf8ed45ff47ff4071fd09e9fd8"}],"database_specific":{"cpe":"cpe:2.3:a:ffmpeg:ffmpeg:4.4:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"4.4"}],"source":"CPE_FIELD"}}],"versions":["n4.4-dev","n4.3-dev","n4.2-dev","n4.1-dev","n3.5-dev","n3.4-dev","n3.3-dev","n3.2-dev","n3.1-dev","n2.9-dev","n2.8-dev","n2.7-dev","n2.6-dev","n2.5-dev","n2.4-dev","n2.3-dev","n2.2-dev","n2.0","n2.1-dev","n1.3-dev","n1.2-dev","n1.1-dev","n0.12-dev","n0.11-dev","n0.8","N"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-38171.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/ffmpeg/ffmpeg","events":[{"introduced":"0"},{"last_affected":"c5079bf3bccd24bf8ed45ff47ff4071fd09e9fd8"}],"database_specific":{"cpe":"cpe:2.3:a:ffmpeg:ffmpeg:4.4:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"4.4"}],"source":"CPE_FIELD"}}],"versions":["n4.4-dev","n4.3-dev","n4.2-dev","n4.1-dev","n3.5-dev","n3.4-dev","n3.3-dev","n3.2-dev","n3.1-dev","n2.9-dev","n2.8-dev","n2.7-dev","n2.6-dev","n2.5-dev","n2.4-dev","n2.3-dev","n2.2-dev","n2.0","n2.1-dev","n1.3-dev","n1.2-dev","n1.1-dev","n0.12-dev","n0.11-dev","n0.8","N"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-38171.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}