{"id":"CVE-2014-5207","aliases":["BELL-CVE-2014-5207","DEBIAN-CVE-2014-5207","EUVD-2014-5105","GHSA-gv3p-vh66-pccp","UBUNTU-CVE-2014-5207","USN-2318-1"],"status":"published","title":"fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV,...","description":"fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a \"mount -o remount\" command within a user namespace.","severity":{"version":"2.0","score":6.2,"vector":"AV:L/AC:H/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00881,"percentile":0.59347,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-269"],"published":"2014-08-13T00:00:00Z","modified":"2026-10-23T15:47:35Z","exploits":[{"source":"exploitdb","id":"EDB-34923","title":"Linux Kernel \u003c 3.16.1 - 'Remount FUSE' Local Privilege Escalation","type":"local","platform":"linux","date":"2014-10-09","url":"https://www.exploit-db.com/exploits/34923"}],"fixes":[{"ecosystem":"Debian:12","package":"linux","fixed_in":["3.16.2-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"linux","fixed_in":["3.16.2-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"linux","fixed_in":["3.16.2-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"linux","fixed_in":["3.13.0-34.60"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.16.2-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.16.2-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.16.2-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.13.0-34.60"}]}],"versions":["3.11.0-12.19","3.12.0-1.3","3.12.0-2.5","3.12.0-2.7","3.12.0-3.8","3.12.0-3.9","3.12.0-4.10","3.12.0-4.12","3.12.0-5.13","3.12.0-7.15","3.13.0-1.16","3.13.0-2.17","3.13.0-3.18","3.13.0-4.19","3.13.0-5.20","3.13.0-6.23","3.13.0-7.25","3.13.0-7.26","3.13.0-8.27","3.13.0-8.28","3.13.0-10.30","3.13.0-11.31","3.13.0-12.32","3.13.0-13.33","3.13.0-14.34","3.13.0-15.35","3.13.0-16.36","3.13.0-17.37","3.13.0-18.38","3.13.0-19.39","3.13.0-19.40","3.13.0-20.42","3.13.0-21.43","3.13.0-22.44","3.13.0-23.45","3.13.0-24.46","3.13.0-24.47","3.13.0-27.50","3.13.0-29.53","3.13.0-30.54","3.13.0-30.55","3.13.0-32.57","3.13.0-33.58"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.13.0-34.60"}]}],"versions":["3.11.0-12.19","3.12.0-1.3","3.12.0-2.5","3.12.0-2.7","3.12.0-3.8","3.12.0-3.9","3.12.0-4.10","3.12.0-4.12","3.12.0-5.13","3.12.0-7.15","3.13.0-1.16","3.13.0-2.17","3.13.0-3.18","3.13.0-4.19","3.13.0-5.20","3.13.0-6.23","3.13.0-7.25","3.13.0-7.26","3.13.0-8.27","3.13.0-8.28","3.13.0-10.30","3.13.0-11.31","3.13.0-12.32","3.13.0-13.33","3.13.0-14.34","3.13.0-15.35","3.13.0-16.36","3.13.0-17.37","3.13.0-18.38","3.13.0-19.39","3.13.0-19.40","3.13.0-20.42","3.13.0-21.43","3.13.0-22.44","3.13.0-23.45","3.13.0-24.46","3.13.0-24.47","3.13.0-27.50","3.13.0-29.53","3.13.0-30.54","3.13.0-30.55","3.13.0-32.57","3.13.0-33.58"],"bundled":2}],"products":[{"vendor":"canonical","product":"ubuntu_linux"},{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"http://www.securityfocus.com/bid/69216","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"http://seclists.org/oss-sec/2014/q3/352","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"https://github.com/torvalds/linux/commit/9566d6742852c527bf5af38af5cbb878dad75705","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","advisory","fix"]},{"url":"http://www.ubuntu.com/usn/USN-2318-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory","advisory"]},{"url":"http://osvdb.org/show/osvdb/110055","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","Broken Link","web"]},{"url":"http://www.exploit-db.com/exploits/34923","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Exploit","Third Party Advisory","VDB Entry","advisory","evidence"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9566d6742852c527bf5af38af5cbb878dad75705","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1129662","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Patch","Third Party Advisory","advisory","fix","report"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/95266","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"http://packetstormsecurity.com/files/128595/Linux-Kernel-3.16.1-FUSE-Privilege-Escalation.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry","advisory","evidence"]},{"url":"http://www.openwall.com/lists/oss-security/2014/08/13/4","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","article","report"]},{"url":"http://www.ubuntu.com/usn/USN-2317-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2014-5207"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9566d6742852c527bf5af38af5cbb878dad75705"},{"url":"https://github.com/advisories/GHSA-gv3p-vh66-pccp"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2014-5207","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2014-5207","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2014-5207","tags":["report"]},{"url":"http://www.openwall.com/lists/oss-security/2014/08/12/6","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-2317-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/notices/USN-2318-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2014-5207","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2014-5206","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2014-5207","description":"fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2014-08-18T10:00:00Z","modified":"2024-08-06T11:41:47.767Z","updated_at":"2026-11-02T14:33:41.889751Z"}],"euvd":[{"id":"EUVD-2014-5105","description":"fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2014-08-18T10:00:00Z","modified":"2024-08-06T11:41:47Z","updated_at":"2026-11-03T01:57:03.789124Z"}],"ghsa":[{"id":"GHSA-gv3p-vh66-pccp","title":"fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV,...","description":"fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2022-05-13T01:23:24Z","modified":"2025-04-12T12:37:46Z","cwes":["CWE-269"],"updated_at":"2026-11-02T15:01:18.41255Z"}],"nvd":[{"id":"CVE-2014-5207","description":"fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2014-08-18T11:15:27.153Z","modified":"2026-06-17T00:11:13.003Z","cvss":[{"version":"2.0","score":6.2,"vector":"AV:L/AC:H/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:02:55.19899Z"}],"osv":[{"id":"BELL-CVE-2014-5207","title":"CVE-2014-5207 does not affect BellSoft software","status":"withdrawn","published":"2014-08-18T11:15:00Z","modified":"2026-01-28T07:21:24.828433Z","cvss":[{"version":"2.0","score":6.2,"vector":"AV:L/AC:H/Au:N/C:C/I:C/A:C","level":"medium"}],"updated_at":"2026-11-02T15:28:13.47097Z"},{"id":"CVE-2014-5207","description":"fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2014-08-18T11:15:27Z","modified":"2026-04-10T03:43:55.674947Z","updated_at":"2026-11-02T15:43:59.654289Z"},{"id":"DEBIAN-CVE-2014-5207","description":"fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2014-08-18T11:15:27.153Z","modified":"2026-10-23T15:47:35.634417276Z","updated_at":"2026-11-02T15:45:26.134753Z"},{"id":"UBUNTU-CVE-2014-5207","description":"fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2014-08-13T00:00:00Z","modified":"2026-04-22T09:46:08.133668Z","updated_at":"2026-11-02T15:54:09.010095Z"},{"id":"USN-2318-1","title":"linux vulnerabilities","description":"Eric W. Biederman discovered a flaw with the mediation of mount flags in\nthe Linux kernel's user namespace subsystem. An unprivileged user could\nexploit this flaw to by-pass mount restrictions, and potentially gain\nadministrative privileges. (CVE-2014-5207)\n\nKenton Varda discovered a flaw with read-only bind mounds when used with\nuser namespaces. An unprivileged local user could exploit this flaw to gain\nfull write privileges to a mount that should be read only. (CVE-2014-5206)\n","status":"published","published":"2014-08-18T06:56:04Z","modified":"2026-04-22T08:59:16.090914Z","updated_at":"2026-11-02T16:58:09.227524Z"}]}}