{"schema_version":"1.7.5","id":"OSV-2026-981","published":"2026-06-27T00:19:11.500567Z","modified":"2026-06-27T00:19:11.500860Z","summary":"Heap-buffer-overflow in std::__1::__function::__func<grk::FileFormatJP2Decompress::FileFormatJP2Decompre","details":"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<grk::FileFormatJP2Decompress::FileFormatJP2Decompre\nstd::__1::__function::__func<grk::CodeStreamDecompress::postMultiTile\ngrk::CodeStreamDecompress::wait\n```\n","affected":[{"package":{"name":"grok","ecosystem":"OSS-Fuzz","purl":"pkg:generic/grok"},"ranges":[{"type":"GIT","repo":"https://github.com/GrokImageCompression/grok.git","events":[{"introduced":"152eec18b4770b875be691a2afc333bcd6d725aa"},{"fixed":"f76c6e85fcf629f7dc5b961e37f4fefb00ce7c7e"}]}],"versions":["v20.3.5","v20.3.6"],"ecosystem_specific":{"severity":"HIGH"},"database_specific":{"fixed_range":"82ce38159c68ac6da531682dc542bbbdf32c15b9:f76c6e85fcf629f7dc5b961e37f4fefb00ce7c7e","introduced_range":"432a2a59cb1995c89e63ca527dfe4adee70f6a99:4517ebc350ce24e46291d07e2883c0b1c7363f9f","source":"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/grok/OSV-2026-981.yaml"}}],"references":[{"type":"REPORT","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=527773834"}]}