{"id":"OSV-2021-349","aliases":[],"status":"published","title":"Heap-buffer-overflow in flatbuffers::vector_downward::fill","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30684\n\n```\nCrash type: Heap-buffer-overflow WRITE 1\nCrash state:\nflatbuffers::vector_downward::fill\nflatbuffers::FlatBufferBuilder::PreAlign\nflatbuffers::FlatBufferBuilder::ForceVectorAlignment\n```","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2021-02-10T00:00:39.669242Z","modified":"2022-04-13T03:04:42Z","affected":[{"source":"osv","ecosystem":"OSS-Fuzz","package":"flatbuffers","ranges":[{"type":"GIT","events":[{"introduced":"6f3e45eca1fde7a68cb72fd4499a3647f719c9db"},{"fixed":"fee095410b0969765b5c2545c10e585f69e961b0"}]}]}],"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30684","tags":["report"]}],"sources":{"osv":[{"id":"OSV-2021-349","title":"Heap-buffer-overflow in flatbuffers::vector_downward::fill","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30684\n\n```\nCrash type: Heap-buffer-overflow WRITE 1\nCrash state:\nflatbuffers::vector_downward::fill\nflatbuffers::FlatBufferBuilder::PreAlign\nflatbuffers::FlatBufferBuilder::ForceVectorAlignment\n```\n","status":"published","published":"2021-02-10T00:00:39.669242Z","modified":"2022-04-13T03:04:42.089425Z","updated_at":"2026-11-02T15:52:49.04248Z"}]}}