CVE-2014-5206

HighCVSS 7.2/10Last modified Jun 17, 2026

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.

Metrics

CVSS 2.0 7.2/10AV:L/AC:L/Au:N/C:C/I:C/A:C

Weakness enumeration

CWE-269

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccd
http://www.openwall.com/lists/oss-security/2014/08/13/4Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/69214Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2317-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2318-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1129662Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccdPatch, Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccd
http://www.openwall.com/lists/oss-security/2014/08/13/4Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/69214Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2317-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2318-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1129662Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccdPatch, Third Party Advisory

Timeline

Published: Aug 18, 2014
Last modified: Jun 17, 2026
NVD status: Modified

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