{"id":"CVE-2014-5206","aliases":["DEBIAN-CVE-2014-5206","EUVD-2014-5104","GHSA-mm23-fxmx-2r5j","UBUNTU-CVE-2014-5206","USN-2318-1"],"status":"published","title":"The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain...","description":"The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a \"mount -o remount\" command within a user namespace.","severity":{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00368,"percentile":0.30873,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-269"],"published":"2014-08-13T00:00:00Z","modified":"2026-10-23T15:47:34Z","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://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccd","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://www.ubuntu.com/usn/USN-2318-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory","advisory"]},{"url":"http://www.securityfocus.com/bid/69214","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"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://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccd","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","advisory","fix"]},{"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-2014-5206"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a6138db815df5ee542d848318e5dae681590fccd"},{"url":"https://github.com/advisories/GHSA-mm23-fxmx-2r5j"},{"url":"https://security-tracker.debian.org/tracker/CVE-2014-5206","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2014-5206","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-2014-5206","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2014-5207","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2014-5206","description":"The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2014-08-18T10:00:00Z","modified":"2024-08-06T11:41:47.763Z","updated_at":"2026-11-02T14:33:41.553118Z"}],"euvd":[{"id":"EUVD-2014-5104","description":"The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms 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-mm23-fxmx-2r5j","title":"The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain...","description":"The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2022-05-13T01:23:24Z","modified":"2025-04-12T12:37:41Z","cwes":["CWE-269"],"updated_at":"2026-11-02T15:01:18.41255Z"}],"nvd":[{"id":"CVE-2014-5206","description":"The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2014-08-18T11:15:27.107Z","modified":"2026-06-17T00:11:12.88Z","cvss":[{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:02:55.19899Z"}],"osv":[{"id":"CVE-2014-5206","description":"The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2014-08-18T11:15:27Z","modified":"2026-04-10T03:43:55.906478Z","updated_at":"2026-11-02T15:43:59.654289Z"},{"id":"DEBIAN-CVE-2014-5206","description":"The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2014-08-18T11:15:27.107Z","modified":"2026-10-23T15:47:34.362457459Z","updated_at":"2026-11-02T15:45:26.134753Z"},{"id":"UBUNTU-CVE-2014-5206","description":"The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a \"mount -o remount\" command within a user namespace.","status":"published","published":"2014-08-13T00:00:00Z","modified":"2026-04-22T09:46:28.078859Z","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"}]}}