{"id":"CVE-2021-2194","details":"Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 5.7.33 and prior and 8.0.23 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).","aliases":["BIT-mariadb-2021-2194","BIT-mariadb-min-2021-2194","BIT-mysql-client-2021-2194"],"modified":"2026-05-06T21:24:00.280922Z","published":"2021-04-22T22:15:14.003Z","related":["ALSA-2021:3590","CGA-f9qj-8rwh-pq22"],"database_specific":{"unresolved_ranges":[{"source":"CPE_FIELD","extracted_events":[{"last_affected":"32"}],"cpe":"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"33"}],"cpe":"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"34"}],"cpe":"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AKV7TRUEQW6EV45RSZVVFLVQMNHVHBCJ/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJQRPXNDH6YHQLUSCS5VA7DAW32PN7N7/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJVUTKKFQAWR7NURCQHQQ5JHTVYGEOYQ/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210513-0002/"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpuapr2021.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mariadb/server","events":[{"introduced":"9664240c948a92c22ccda0e1f5a420eb776ddcb1"},{"fixed":"6d3792a9a2e30201ffbdc977e370e96825b24f3b"},{"introduced":"20ae591abd0bfe1bfaee546989ee163f4ef832b1"},{"fixed":"d5ce7824444b7491f420061076ae5087d4829428"},{"introduced":"c761b43451d54eeeecdf3c102906fcce88d4e9d9"},{"fixed":"1f18e0c70e3602710c6cb3bef05e7a3ab80573d1"},{"introduced":"7c7f9bef28aa566557da31402142f6dd8298ddd2"},{"fixed":"90f43d260e407c650aa8a7885d674c717618cc37"}],"database_specific":{"source":"CPE_FIELD","extracted_events":[{"introduced":"10.2.0"},{"fixed":"10.2.35"},{"introduced":"10.3.0"},{"fixed":"10.3.26"},{"introduced":"10.4.0"},{"fixed":"10.4.16"},{"introduced":"10.5.0"},{"fixed":"10.5.7"}],"cpe":"cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*"}}],"versions":["mariadb-10.2.0","mariadb-10.2.1","mariadb-10.2.10","mariadb-10.2.11","mariadb-10.2.12","mariadb-10.2.13","mariadb-10.2.14","mariadb-10.2.15","mariadb-10.2.16","mariadb-10.2.18","mariadb-10.2.19","mariadb-10.2.2","mariadb-10.2.20","mariadb-10.2.21","mariadb-10.2.22","mariadb-10.2.23","mariadb-10.2.24","mariadb-10.2.25","mariadb-10.2.26","mariadb-10.2.27","mariadb-10.2.28","mariadb-10.2.29","mariadb-10.2.30","mariadb-10.2.31","mariadb-10.2.5","mariadb-10.3.0","mariadb-10.3.1","mariadb-10.3.10","mariadb-10.3.12","mariadb-10.3.16","mariadb-10.3.17","mariadb-10.3.18","mariadb-10.3.19","mariadb-10.3.2","mariadb-10.3.20","mariadb-10.3.21","mariadb-10.3.4","mariadb-10.3.5","mariadb-10.3.6","mariadb-10.3.7","mariadb-10.4.10","mariadb-10.4.11","mariadb-10.4.3","mariadb-10.4.4","mariadb-10.4.5","mariadb-10.4.7","mariadb-10.4.9","mariadb-10.5.0","mariadb-10.5.2","mariadb-10.5.4"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-2194.json","vanir_signatures":[{"id":"CVE-2021-2194-35beb49c","deprecated":false,"target":{"function":"buf_read_ahead_random","file":"storage/innobase/buf/buf0rea.cc"},"source":"https://github.com/mariadb/server/commit/90f43d260e407c650aa8a7885d674c717618cc37","signature_version":"v1","signature_type":"Function","digest":{"length":1703,"function_hash":"139143476138614112663389233342431924674"}},{"id":"CVE-2021-2194-39f20dc1","deprecated":false,"target":{"file":"storage/innobase/buf/buf0rea.cc"},"source":"https://github.com/mariadb/server/commit/90f43d260e407c650aa8a7885d674c717618cc37","signature_version":"v1","signature_type":"Line","digest":{"line_hashes":["209286758564299416669712706539792081897","184427145676706799271968024451543459266","189431539836803129291652246390974801250","337679024572281120129856860082269354154"],"threshold":0.9}}],"vanir_signatures_modified":"2026-05-06T21:24:00Z"}},{"ranges":[{"type":"GIT","repo":"https://github.com/mysql/mysql-server","events":[{"introduced":"0"},{"last_affected":"e5d189ecb9465f4be6235109dd3dbcaab01ddc53"},{"introduced":"270fd3411e3d671a73ed9725940a30080f59ce6d"},{"last_affected":"7ed30a748964c009d4909cb8b4b22036ebdef239"}],"database_specific":{"source":"CPE_FIELD","extracted_events":[{"introduced":"5.7.0"},{"last_affected":"5.7.33"},{"introduced":"8.0.0"},{"last_affected":"8.0.23"}],"cpe":"cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*"}}],"versions":["mysql-3.23.22-beta","mysql-3.23.28-gamma","mysql-3.23.30-gamma","mysql-3.23.31","mysql-3.23.32","mysql-3.23.33","mysql-3.23.36","mysql-4.0.2","mysql-4.0.4","mysql-5.1.4","mysql-5.7.31","mysql-5.7.32","mysql-5.7.33","mysql-8.0.23","mysql-cluster-8.0.23"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-2194.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"}]}