{"id":"CVE-2021-3847","details":"An unauthorized access to the execution of the setuid file with capabilities flaw in the Linux kernel OverlayFS subsystem was found in the way user copying a capable file from a nosuid mount into another mount. A local user could use this flaw to escalate their privileges on the system.","modified":"2026-03-14T11:05:52.081226Z","published":"2022-04-01T23:15:10.597Z","references":[{"type":"ADVISORY","url":"https://www.openwall.com/lists/oss-security/2021/10/14/3"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2009704"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3847.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"5.17.0"}]},{"events":[{"introduced":"0"},{"last_affected":"34"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}