{"id":"CVE-2026-75144","summary":"FFmpeg Heap Buffer Overflow in VC-2/Dirac RTP Packetizer","details":"FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packetizer copies an input-derived data unit or fragment size into a fixed-size buffer without an upper bound check, causing a heap buffer overflow when the crafted input is packetized for RTP output.","modified":"2026-10-08T07:39:17.625058359Z","published":"2026-08-19T16:26:53.987Z","related":["SUSE-SU-2026:4149-1","SUSE-SU-2026:4150-1","openSUSE-SU-2026:11659-1","openSUSE-SU-2026:11665-1","openSUSE-SU-2026:11682-1","openSUSE-SU-2026:11716-1","openSUSE-SU-2026:21877-1"],"database_specific":{"cwe_ids":["CWE-122"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75144.json","cna_assigner":"VulnCheck"},"references":[{"type":"WEB","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75144.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-75144"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/ffmpeg-heap-buffer-overflow-in-vc-2-dirac-rtp-packetizer"},{"type":"REPORT","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24091"},{"type":"FIX","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1cdeb3c4e7f1f8566d846b9b451e01c376398818"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://code.ffmpeg.org/FFmpeg/FFmpeg","events":[{"introduced":"0"},{"fixed":"1cdeb3c4e7f1f8566d846b9b451e01c376398818"}]}],"versions":["n9.1-dev","n8.2-dev","n8.1-dev","n7.2-dev","n7.1-dev","n6.2-dev","n6.1-dev","n5.2-dev","n5.1-dev","n4.5-dev","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":{"vanir_signatures":[{"signature_type":"Line","signature_version":"v1","source":"https://code.ffmpeg.org/FFmpeg/FFmpeg@1cdeb3c4e7f1f8566d846b9b451e01c376398818","target":{"file":"libavformat/rtpenc_vc2hq.c"},"deprecated":false,"digest":{"line_hashes":["316357024166286346165926659617163400573","127746759713471434130856597163262963208","301064421388455074328089333523998137870","116212416638397767047587542117202974914","114729448577907362427053181188110202832","306825215554532051322520355267362597241","330527229270051716382168346158732284045","2968436290435898471545692857936905519","261235370847716918087976310156230815464","89540246464668109287460134111944819328","120319973182995285824472560222953833016","138457451703610343292884704979454333448","323348671736564199018539820174714876796","137018543798981702275176420321140998801","117561353975995506158848177959126560580","311323153511762036949132387046672844251","150977447750569585358657742062409468654","25799368823343895911243494920422779101","83678267071713499043261077067687190203","19652416943660723347929663811560247056"],"threshold":0.9},"id":"CVE-2026-75144-102c5f82"},{"digest":{"function_hash":"39164272050373447905157457487691882523","length":1419},"id":"CVE-2026-75144-8aa1e3a2","signature_type":"Function","signature_version":"v1","source":"https://code.ffmpeg.org/FFmpeg/FFmpeg@1cdeb3c4e7f1f8566d846b9b451e01c376398818","target":{"function":"send_picture","file":"libavformat/rtpenc_vc2hq.c"},"deprecated":false},{"signature_version":"v1","source":"https://code.ffmpeg.org/FFmpeg/FFmpeg@1cdeb3c4e7f1f8566d846b9b451e01c376398818","target":{"function":"send_packet","file":"libavformat/rtpenc_vc2hq.c"},"deprecated":false,"digest":{"length":517,"function_hash":"9459082259210782870257962390908010132"},"id":"CVE-2026-75144-f15d5166","signature_type":"Function"}],"vanir_signatures_modified":"2026-10-08T07:39:17Z","source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75144.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}