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CVE-2014-5206

CVE-2014-5206

EPSS 0.4%
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 products
n/a · n/a

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References
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a6138db815df5ee542d848318e5dae681590fccdhttps://bugzilla.redhat.com/show_bug.cgi?id=1129662https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccdhttp://www.openwall.com/lists/oss-security/2014/08/13/4http://www.securityfocus.com/bid/69214http://www.ubuntu.com/usn/USN-2317-1http://www.ubuntu.com/usn/USN-2318-1