CVE-2014-5206 | BDVDB-2026-63207 Detail
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.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccd
- http://www.ubuntu.com/usn/USN-2318-1
- http://www.securityfocus.com/bid/69214
- https://bugzilla.redhat.com/show_bug.cgi?id=1129662
- https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccd
- http://www.openwall.com/lists/oss-security/2014/08/13/4
- http://www.ubuntu.com/usn/USN-2317-1
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.