CVEvulnerability
CVE-2014-5206
7.2 HIGH
Official page ↗
- Status
- Modified
- Published
- 2014-08-18
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 2.0 ([email protected])
- 7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-269
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.
Affected configurations
• 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
Related
Weakness · CWE (1)
- CWE-269 Improper Privilege Management weakness
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccd git.kernel.org
- http://www.openwall.com/lists/oss-security/2014/08/13/4 Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/69214 Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-2317-1 Third Party Advisory
- http://www.ubuntu.com/usn/USN-2318-1 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1129662 Issue Tracking, Patch, Third Party Advisory
- https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccd Patch, Third Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccd git.kernel.org
- http://www.openwall.com/lists/oss-security/2014/08/13/4 Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/69214 Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-2317-1 Third Party Advisory
- http://www.ubuntu.com/usn/USN-2318-1 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1129662 Issue Tracking, Patch, Third Party Advisory
- https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccd Patch, Third Party Advisory