{"id":"OSV-2026-57","aliases":[],"status":"published","title":"Heap-buffer-overflow in mkv::matroska_segment_c::TrackInit","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=475261418\n\n```\nCrash type: Heap-buffer-overflow READ 1\nCrash state:\nmkv::matroska_segment_c::TrackInit\nmkv::matroska_segment_c::TrackInit\nmkv::matroska_segment_c::ParseTrackEntry\n```","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2026-01-15T00:19:47.203374Z","modified":"2026-01-15T00:19:47Z","affected":[{"source":"osv","ecosystem":"OSS-Fuzz","package":"vlc","ranges":[{"type":"GIT","events":[{"introduced":"f8e9d090fc20452cfddb91df28bf235eb59baff1"},{"fixed":"643b5a278f40a899d0c981499da70a0721e1dff5"}]}]}],"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=475261418","tags":["report"]}],"sources":{"osv":[{"id":"OSV-2026-57","title":"Heap-buffer-overflow in mkv::matroska_segment_c::TrackInit","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=475261418\n\n```\nCrash type: Heap-buffer-overflow READ 1\nCrash state:\nmkv::matroska_segment_c::TrackInit\nmkv::matroska_segment_c::TrackInit\nmkv::matroska_segment_c::ParseTrackEntry\n```\n","status":"published","published":"2026-01-15T00:19:47.203374Z","modified":"2026-01-15T00:19:47.203695Z","updated_at":"2026-11-02T15:52:50.263679Z"}]}}