Race condition in the Measurement, Aggregation, and Correlation Engine (MACE) implementation in Cisco IOS 15.4(2)T3 and earlier allows remote attackers to cause a denial of service (device reload) via crafted network traffic that triggers improper handling of the timing of process switching and Cisco Express Forwarding (CEF) switching, aka Bug ID CSCul48736.
https://exchange.xforce.ibmcloud.com/vulnerabilities/100808
http://www.securitytracker.com/id/1031731
http://www.securityfocus.com/bid/72566
http://tools.cisco.com/security/center/viewAlert.x?alertId=37421
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2015-0608