net/netfilter/nf_conntrack_proto_dccp.c in the Linux kernel through 3.13.6 uses a DCCP header pointer incorrectly, which allows remote attackers to cause a denial of service (system crash) or possibly execute arbitrary code via a DCCP packet that triggers a call to the (1) dccp_new, (2) dccp_packet, or (3) dccp_error function.
https://github.com/torvalds/linux/commit/b22f5126a24b3b2f15448c3f2a254fc10cbc2b92
https://exchange.xforce.ibmcloud.com/vulnerabilities/91910
https://bugzilla.redhat.com/show_bug.cgi?id=1077343
http://www.ubuntu.com/usn/USN-2174-1
http://www.ubuntu.com/usn/USN-2173-1
http://www.securitytracker.com/id/1029945
http://www.securityfocus.com/bid/66279
http://www.openwall.com/lists/oss-security/2014/03/17/7