The lbs_debugfs_write function in drivers/net/wireless/libertas/debugfs.c in the Linux kernel through 3.12.1 allows local users to cause a denial of service (OOPS) by leveraging root privileges for a zero-length write operation.
https://github.com/torvalds/linux/commit/a497e47d4aec37aaf8f13509f3ef3d1f6a717d88
https://bugzilla.redhat.com/show_bug.cgi?id=1033578
http://www.ubuntu.com/usn/USN-2116-1
http://www.ubuntu.com/usn/USN-2115-1
http://www.ubuntu.com/usn/USN-2114-1
http://www.ubuntu.com/usn/USN-2112-1
http://www.ubuntu.com/usn/USN-2111-1
http://www.ubuntu.com/usn/USN-2075-1
http://www.ubuntu.com/usn/USN-2070-1
http://www.ubuntu.com/usn/USN-2067-1
http://www.ubuntu.com/usn/USN-2066-1
http://www.ubuntu.com/usn/USN-2065-1
http://www.ubuntu.com/usn/USN-2064-1
http://www.securityfocus.com/bid/63886
http://www.openwall.com/lists/oss-security/2013/11/22/5
http://secunia.com/advisories/59406
http://secunia.com/advisories/59309
http://secunia.com/advisories/59262
http://rhn.redhat.com/errata/RHSA-2014-0100.html
http://lists.opensuse.org/opensuse-updates/2014-02/msg00045.html
http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.html
http://linux.oracle.com/errata/ELSA-2014-3043.html