{"id":"OSV-2026-611","aliases":[],"status":"published","title":"Heap-buffer-overflow in ParseOpaqueMetadata","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=504617128\n\n```\nCrash type: Heap-buffer-overflow READ 4\nCrash state:\nParseOpaqueMetadata\nReadOpaqueInfo5\nMat_VarReadNextInfo5\n```","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2026-04-22T00:09:09.767586Z","modified":"2026-04-22T00:09:09Z","affected":[{"source":"osv","ecosystem":"OSS-Fuzz","package":"matio","ranges":[{"type":"GIT","events":[{"introduced":"a0210352e032d2fd78a8b228bb602db4bf78e897"},{"fixed":"070cd4b945e775f32cc4f090eb1808a78152b6b2"}]}]}],"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=504617128","tags":["report"]}],"sources":{"osv":[{"id":"OSV-2026-611","title":"Heap-buffer-overflow in ParseOpaqueMetadata","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=504617128\n\n```\nCrash type: Heap-buffer-overflow READ 4\nCrash state:\nParseOpaqueMetadata\nReadOpaqueInfo5\nMat_VarReadNextInfo5\n```\n","status":"published","published":"2026-04-22T00:09:09.767586Z","modified":"2026-04-22T00:09:09.767978Z","updated_at":"2026-11-02T15:52:50.263679Z"}]}}