CVE-2014-5206
Last modified
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
Weakness Enumeration
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://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://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
- Last Modified
- Status
- Modified
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