{"id":"CVE-2016-6197","details":"fs/overlayfs/dir.c in the OverlayFS filesystem implementation in the Linux kernel before 4.6 does not properly verify the upper dentry before proceeding with unlink and rename system-call processing, which allows local users to cause a denial of service (system crash) via a rename system call that specifies a self-hardlink.","modified":"2026-03-12T22:21:25.948954Z","published":"2016-08-06T20:59:12.067Z","references":[{"type":"WEB","url":"http://www.securityfocus.com/bid/91709"},{"type":"WEB","url":"http://www.securitytracker.com/id/1036273"},{"type":"ADVISORY","url":"http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-3070-1"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-3070-4"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2016-1847.html"},{"type":"ADVISORY","url":"http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-3070-2"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-3070-3"},{"type":"ADVISORY","url":"http://rhn.redhat.com/errata/RHSA-2016-1875.html"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2016/07/11/8"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1355650"},{"type":"FIX","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=11f3710417d026ea2f4fcf362d866342c5274185"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/11f3710417d026ea2f4fcf362d866342c5274185"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-6197.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"6"}]},{"events":[{"introduced":"0"},{"last_affected":"4.5.7"}]},{"events":[{"introduced":"0"},{"last_affected":"3.4"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}