{"id":"CVE-2020-36401","details":"mruby 2.1.2 has a double free in mrb_default_allocf (called from mrb_free and obj_free).","modified":"2026-04-11T09:46:25.679993Z","published":"2021-07-01T03:15:07.820Z","references":[{"type":"ADVISORY","url":"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/mruby/OSV-2020-744.yaml"},{"type":"FIX","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23801"},{"type":"FIX","url":"https://github.com/mruby/mruby/commit/97319697c8f9f6ff27b32589947e1918e3015503"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mruby/mruby","events":[{"introduced":"0"},{"last_affected":"1a9bdfcde5fd7c91e756747ba0565f29385115a7"},{"fixed":"97319697c8f9f6ff27b32589947e1918e3015503"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"2.1.2"}]}}],"versions":["1.0.0","1.1.0","1.2.0","2.1.2","2.1.2-rc","2.1.2-rc2"],"database_specific":{"vanir_signatures":[{"source":"https://github.com/mruby/mruby/commit/97319697c8f9f6ff27b32589947e1918e3015503","target":{"file":"src/gc.c"},"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["257450489011316511620633402431798244724","291664367464202302924807726550456561833","283430232777236476392833576910594740772","916156461856379022783379629891076070"]},"id":"CVE-2020-36401-0cef8eb3","signature_type":"Line","signature_version":"v1"},{"deprecated":false,"digest":{"function_hash":"73814944348713604547654280989925281376","length":326},"id":"CVE-2020-36401-f28469e6","signature_type":"Function","signature_version":"v1","source":"https://github.com/mruby/mruby/commit/97319697c8f9f6ff27b32589947e1918e3015503","target":{"file":"src/gc.c","function":"mrb_realloc"}}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36401.json","vanir_signatures_modified":"2026-04-11T09:46:25Z"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}