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.
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b22f5126a24b3b2f15448c3f2a254fc10cbc2b92
secunia.com/advisories/57446
www.openwall.com/lists/oss-security/2014/03/17/7
www.securityfocus.com/bid/66279
www.securitytracker.com/id/1029945
www.ubuntu.com/usn/USN-2173-1
www.ubuntu.com/usn/USN-2174-1
bugzilla.redhat.com/show_bug.cgi?id=1077343
exchange.xforce.ibmcloud.com/vulnerabilities/91910
github.com/torvalds/linux/commit/b22f5126a24b3b2f15448c3f2a254fc10cbc2b92
twitter.com/grsecurity/statuses/445496197399461888