CVE-2014-5206

Name: CVE-2014-5206
Creator: NVD / NIST
Published: 2014-08-18T11:15:27.107+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.37%

Last modified Jun 17, 2026

CVE-2014-5206 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

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

EPSS Probability

0.37%

28.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-269

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 3.8, < 3.10.55
Linux	Linux Kernel	>= 3.11, < 3.12.27
Linux	Linux Kernel	>= 3.13, < 3.14.19
Linux	Linux Kernel	>= 3.15, < 3.16.3
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04

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
Status: Modified

Frequently Asked Questions

What is CVE-2014-5206?

How severe is CVE-2014-5206?

Severity scoring for CVE-2014-5206 is pending analysis. The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2014-5206?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2014-5206?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST