Cisco Security Advisory – Multiple vulnerabilities exist in the Cisco Firewall Services Module (FWSM) for the Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers that may cause the Cisco FWSM to reload after processing crafted SunRPC or certain TCP packets. Repeated exploitation could result in a sustained DoS condition.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/92486/cisco-sa-20100804-fwsm.txt
Source: https://packetstormsecurity.com/files/92486/Cisco-Security-Advisory-20100804-fwsm.html