Call of Duty 4 (CoD4) 1.5 and earlier allows remote authenticated users to cause a denial of service (crash) via a type 7 stats packet, which triggers a memcpy with a negative value.
https://exchange.xforce.ibmcloud.com/vulnerabilities/42163
http://www.securityfocus.com/bid/29026
http://www.securityfocus.com/archive/1/491564/100/0/threaded
http://securityreason.com/securityalert/3858