The MITRE CVE dictionary describes this issue as:
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.
Find out more about CVE-2014-2523 from the
MITRE CVE dictionary dictionary and
This issue does not affect the versions of the kernel package as shipped with
Red Hat Enterprise Linux 5.