CVE-2014-1874 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-1874): The security_context_to_sid_core function in security/selinux/ss/services.c in the Linux kernel before 3.13.4 allows local users to cause a denial of service (system crash) by leveraging the CAP_MAC_ADMIN capability to set a zero-length security context.
Fix in 3.14, https://github.com/torvalds/linux/commit/2172fa709ab32ca60e86179dc67d0857be8e2c98