Cisco has released a security advisory to address a vulnerability in the following Cisco NX-OS Software Series:
Cisco Nexus 1000v Series Switches
Cisco Nexus 5000 Series Switches
Cisco Nexus 7000 Series Switches
Exploitation of this vulnerability may allow an attacker to cause a denial-of-service condition.
US-CERT encourages users and administrators to review Cisco Security Advisory cisco-sa-20120215 and apply any necessary updates or workarounds to help mitigate the risk.