{"id":"OSV-2021-652","aliases":[],"status":"published","title":"Heap-use-after-free in ZSTD_freeDDict","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33324\n\n```\nCrash type: Heap-use-after-free READ 4\nCrash state:\nZSTD_freeDDict\nblosc2_free_ctx\nblosc2_schunk_free\n```","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2021-04-18T00:01:00.614418Z","modified":"2023-02-04T00:11:28Z","affected":[{"source":"osv","ecosystem":"OSS-Fuzz","package":"c-blosc2","ranges":[{"type":"GIT","events":[{"introduced":"861ba79f31393dec0a0782ca11cf32cebb6f6610"},{"fixed":"7f4574f51ad7db56fc13de89e13e7893b1a82189"}]}],"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"]}],"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33324","tags":["report"]}],"sources":{"osv":[{"id":"OSV-2021-652","title":"Heap-use-after-free in ZSTD_freeDDict","description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33324\n\n```\nCrash type: Heap-use-after-free READ 4\nCrash state:\nZSTD_freeDDict\nblosc2_free_ctx\nblosc2_schunk_free\n```\n","status":"published","published":"2021-04-18T00:01:00.614418Z","modified":"2023-02-04T00:11:28.495734Z","updated_at":"2026-11-02T15:52:49.04248Z"}]}}