{"id":"OSV-2026-981","aliases":[],"status":"published","title":"Heap-buffer-overflow in std::__1::__function::__func\u003cgrk::FileFormatJP2Decompress::FileFormatJP2Decompre","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=527773834\n\n```\nCrash type: Heap-buffer-overflow WRITE 4\nCrash state:\nstd::__1::__function::__func\u003cgrk::FileFormatJP2Decompress::FileFormatJP2Decompre\nstd::__1::__function::__func\u003cgrk::CodeStreamDecompress::postMultiTile\ngrk::CodeStreamDecompress::wait\n```","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2026-06-27T00:19:11.500567Z","modified":"2026-06-27T00:19:11Z","affected":[{"source":"osv","ecosystem":"OSS-Fuzz","package":"grok","ranges":[{"type":"GIT","events":[{"introduced":"152eec18b4770b875be691a2afc333bcd6d725aa"},{"fixed":"f76c6e85fcf629f7dc5b961e37f4fefb00ce7c7e"}]}],"versions":["v20.3.5","v20.3.6"]}],"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=527773834","tags":["report"]}],"sources":{"osv":[{"id":"OSV-2026-981","title":"Heap-buffer-overflow in std::__1::__function::__func\u003cgrk::FileFormatJP2Decompress::FileFormatJP2Decompre","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=527773834\n\n```\nCrash type: Heap-buffer-overflow WRITE 4\nCrash state:\nstd::__1::__function::__func\u003cgrk::FileFormatJP2Decompress::FileFormatJP2Decompre\nstd::__1::__function::__func\u003cgrk::CodeStreamDecompress::postMultiTile\ngrk::CodeStreamDecompress::wait\n```\n","status":"published","published":"2026-06-27T00:19:11.500567Z","modified":"2026-06-27T00:19:11.50086Z","updated_at":"2026-11-02T15:52:50.263679Z"}]}}