UBUNTU-CVE-2014-5207

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UBUNTU-CVE-2014-5207

Summary:

Details: fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a "mount -o remount" command within a user namespace.

References: https://ubuntu.com/security/CVE-2014-5207, http://www.openwall.com/lists/oss-security/2014/08/13/4, http://www.openwall.com/lists/oss-security/2014/08/12/6, https://ubuntu.com/security/notices/USN-2317-1, https://ubuntu.com/security/notices/USN-2318-1, https://www.cve.org/CVERecord?id=CVE-2014-5207