Sending a malformed ICMP packet to an Intel Express Switch or a host residing behind it will crash the system. The malformed packet can be sent locally or remotely and can be spoofed. In the event that the switch receives the malformed ICMP packet, it will continue to operate as a switch, however, it will lose all routing functionality and will not pick up on new connections.
Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: firstname.lastname@example.org.
Intel has provided a firmware upgrade for all affected versions (510T, 520T, 550T, and 550F). It can be downloaded from the link below. Intel Device View 2.1.x is required before installing the upgrade and is also available at the following link: