{"id":"CVE-2020-20902","details":"A CWE-125: Out-of-bounds read vulnerability exists in long_term_filter function in g729postfilter.c in FFmpeg 4.2.1 during computation of the denominator of pseudo-normalized correlation R'(0), that could result in disclosure of information.","modified":"2026-05-18T19:08:29.378418Z","published":"2021-09-20T16:15:09.463Z","related":["SUSE-SU-2021:3521-1","SUSE-SU-2023:0005-1","openSUSE-SU-2021:3521-1"],"references":[{"type":"WEB","url":"http://git.videolan.org/?p=ffmpeg.git%3Ba=commitdiff%3Bh=0c61661a2cbe1b8b284c80ada1c2fdddf4992cad"},{"type":"FIX","url":"https://trac.ffmpeg.org/ticket/8176"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.ffmpeg.org/ffmpeg.git","events":[{"introduced":"0"},{"last_affected":"1529dfb73a5157dcb8762051ec4c8d8341762478"}],"database_specific":{"cpe":"cpe:2.3:a:ffmpeg:ffmpeg:4.2.1:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"4.2.1"}],"source":"CPE_FIELD"}}],"versions":["n4.2.1","n4.2","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-2020-20902.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/ffmpeg/ffmpeg","events":[{"introduced":"0"},{"last_affected":"1529dfb73a5157dcb8762051ec4c8d8341762478"}],"database_specific":{"cpe":"cpe:2.3:a:ffmpeg:ffmpeg:4.2.1:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"4.2.1"}],"source":"CPE_FIELD"}}],"versions":["n4.2.1","n4.2","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-2020-20902.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:H/I:N/A:N"}]}