{"id":"CVE-2014-7975","details":"The do_umount function in fs/namespace.c in the Linux kernel through 3.17 does not require the CAP_SYS_ADMIN capability for do_remount_sb calls that change the root filesystem to read-only, which allows local users to cause a denial of service (loss of writability) by making certain unshare system calls, clearing the / MNT_LOCKED flag, and making an MNT_FORCE umount system call.","modified":"2026-04-16T06:24:22.394085438Z","published":"2014-10-13T10:55:09Z","references":[{"type":"ADVISORY","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ef3a56b1c466629cd0bf482b09c7b0e5a085bb5"},{"type":"ADVISORY","url":"http://secunia.com/advisories/60174"},{"type":"ADVISORY","url":"http://secunia.com/advisories/61145"},{"type":"ADVISORY","url":"http://secunia.com/advisories/62633"},{"type":"ADVISORY","url":"http://secunia.com/advisories/62634"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2014/10/08/22"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/70314"},{"type":"ADVISORY","url":"http://www.securitytracker.com/id/1031180"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-2415-1"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-2416-1"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-2417-1"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-2418-1"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-2419-1"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-2420-1"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-2421-1"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2017:1842"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2017:2077"},{"type":"ADVISORY","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1151108"},{"type":"ADVISORY","url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/96994"},{"type":"ARTICLE","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ef3a56b1c466629cd0bf482b09c7b0e5a085bb5"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2014/10/08/22"},{"type":"FIX","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ef3a56b1c466629cd0bf482b09c7b0e5a085bb5"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1151108"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1151108"},{"type":"WEB","url":"http://thread.gmane.org/gmane.linux.kernel.stable/109312"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}