{"id":"CVE-2021-4157","details":"An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user, having access to the NFS mount, could potentially use this flaw to crash the system or escalate privileges on the system.","modified":"2026-03-13T05:12:19.880828Z","published":"2022-03-25T19:15:09.703Z","related":["ALSA-2022:1988","SUSE-SU-2022:2376-1","SUSE-SU-2022:2377-1","SUSE-SU-2022:2379-1","SUSE-SU-2022:2382-1","SUSE-SU-2022:2393-1","SUSE-SU-2022:2407-1","SUSE-SU-2022:2411-1","SUSE-SU-2022:2424-1","SUSE-SU-2022:2424-2","SUSE-SU-2022:2478-1","SUSE-SU-2022:2549-1","SUSE-SU-2022:2629-1","SUSE-SU-2022:2809-1","openSUSE-SU-2022:2549-1"],"references":[{"type":"WEB","url":"https://lore.kernel.org/lkml/20210517140244.822185482%40linuxfoundation.org/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20220602-0007/"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpujul2022.html"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2034342"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"4.0"},{"fixed":"4.4.269"}]},{"events":[{"introduced":"4.5"},{"fixed":"4.9.269"}]},{"events":[{"introduced":"4.10"},{"fixed":"4.14.233"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.191"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.120"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.38"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.11.22"}]},{"events":[{"introduced":"5.12"},{"fixed":"5.12.5"}]},{"events":[{"introduced":"0"},{"last_affected":"35"}]},{"events":[{"introduced":"0"},{"last_affected":"22.1.1"}]},{"events":[{"introduced":"0"},{"last_affected":"22.1.3"}]},{"events":[{"introduced":"0"},{"last_affected":"22.2.0"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-4157.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}