{"id":"CVE-2021-45868","details":"In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.","modified":"2026-03-15T22:42:32.075395Z","published":"2022-03-18T07:15:06.597Z","related":["SUSE-SU-2022:1163-1","SUSE-SU-2022:1183-1","SUSE-SU-2022:1196-1","SUSE-SU-2022:1197-1","SUSE-SU-2022:1255-1","SUSE-SU-2022:1256-1","SUSE-SU-2022:1257-1","SUSE-SU-2022:1266-1","SUSE-SU-2022:1267-1","SUSE-SU-2022:1270-1","SUSE-SU-2022:1283-1","SUSE-SU-2022:1402-1","SUSE-SU-2022:1407-1","SUSE-SU-2023:0416-1"],"references":[{"type":"ADVISORY","url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20220419-0003/"},{"type":"REPORT","url":"https://bugzilla.kernel.org/show_bug.cgi?id=214655"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050"},{"type":"FIX","url":"https://www.openwall.com/lists/oss-security/2022/03/17/1"},{"type":"FIX","url":"https://www.openwall.com/lists/oss-security/2022/03/17/2"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.15.3"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-45868.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}