{"id":"OSV-2021-1070","aliases":[],"status":"published","title":"Heap-buffer-overflow in ZSTD_decompressBlock_internal","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36623\n\n```\nCrash type: Heap-buffer-overflow READ 4\nCrash state:\nZSTD_decompressBlock_internal\nZSTD_decompressMultiFrame\nZSTD_decompressDCtx\n```","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-07-29T00:01:10.187569Z","modified":"2026-11-12T14:30:06Z","affected":[{"source":"osv","ecosystem":"OSS-Fuzz","package":"c-blosc2","ranges":[{"type":"GIT","events":[{"introduced":"861ba79f31393dec0a0782ca11cf32cebb6f6610"}]}],"versions":["v2.0.0","v2.0.0-rc2","v2.0.0.rc1","v2.0.1","v2.0.2","v2.0.3","v2.0.4","v2.1.0","v2.1.1","v2.2.0","v2.3.0","v2.3.1","v2.4.0","v2.4.1","v2.4.2","v2.4.3","v2.5.0","v2.6.0","v2.6.1","v2.7.0","v2.7.1","v2.8.0","v2.9.0","v2.9.1","v2.9.2","v2.9.3","v2.10.0","v2.10.1","v2.10.2","v2.10.3","v2.10.4","v2.10.5","v2.11.0","v2.11.1","v2.11.2","v2.11.3","v2.12.0","v2.13.0","v2.13.1","v2.13.2","v2.14.0","v2.14.1","v2.14.2","v2.14.3","v2.14.4","v2.15.0","v2.15.1","v2.15.2","v2.16.0","v2.17.0","v2.17.1","v2.18.0","v2.19.0","v2.19.1","v2.20.0","v2.21.0","v2.21.1","v2.21.2","v2.21.3","v2.22.0","v2.23.0","v2.23.1","v3.0.0.rc1","v3.0.0.rc2","v3.0.0","v3.0.1","v3.0.2","v3.0.3","v3.1.0","v3.1.1","v3.1.2","v3.1.3","v3.1.4","v3.1.5","v3.2.0","v3.2.1","v3.2.2","v3.2.3","v3.3.0","v3.3.1","v3.3.2","v3.3.3","v3.3.4","v3.3.5","v3.4.0","v3.4.1","v3.5.0","v3.6.0","v3.6.1","v3.6.2"]}],"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36623","tags":["report"]}],"sources":{"osv":[{"id":"OSV-2021-1070","title":"Heap-buffer-overflow in ZSTD_decompressBlock_internal","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36623\n\n```\nCrash type: Heap-buffer-overflow READ 4\nCrash state:\nZSTD_decompressBlock_internal\nZSTD_decompressMultiFrame\nZSTD_decompressDCtx\n```\n","status":"published","published":"2021-07-29T00:01:10.187569Z","modified":"2026-11-12T14:30:06.0309657Z","updated_at":"2026-11-12T14:53:11.171786Z"}]}}