{"id":"OSV-2026-1309","aliases":[],"status":"published","title":"Heap-buffer-overflow in janet_bytecode_movopt_basic_block","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=563659412\n\n```\nCrash type: Heap-buffer-overflow READ 4\nCrash state:\njanet_bytecode_movopt_basic_block\njanet_bytecode_movopt_full\njanet_bytecode_optimize\n```","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2026-09-21T00:10:08.003546Z","modified":"2026-09-21T00:10:08Z","affected":[{"source":"osv","ecosystem":"OSS-Fuzz","package":"janet","ranges":[{"type":"GIT","events":[{"introduced":"c29050eeda52d117095d2551b7abcf2e98cc9574"},{"fixed":"d763d0d51afddceeb251bc6dd6e9458cc4ec0484"}]}]}],"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=563659412","tags":["report"]}],"sources":{"osv":[{"id":"OSV-2026-1309","title":"Heap-buffer-overflow in janet_bytecode_movopt_basic_block","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=563659412\n\n```\nCrash type: Heap-buffer-overflow READ 4\nCrash state:\njanet_bytecode_movopt_basic_block\njanet_bytecode_movopt_full\njanet_bytecode_optimize\n```\n","status":"published","published":"2026-09-21T00:10:08.003546Z","modified":"2026-09-21T00:10:08.003883Z","updated_at":"2026-11-02T15:52:50.263679Z"}]}}