The mustendd driver in IBM AIX 5.3, 6.1, 7.1, and 7.2 and VIOS 2.2.x, when the jumbo_frames feature is not enabled, allows remote attackers to cause a denial of service (FC1763 or FC5899 adapter crash) via crafted packets.
aix.software.ibm.com/aix/efixes/security/mustendd_advisory.asc
www-01.ibm.com/support/docview.wss?uid=swg1IV80569
www-01.ibm.com/support/docview.wss?uid=swg1IV81357
www-01.ibm.com/support/docview.wss?uid=swg1IV81459
www-01.ibm.com/support/docview.wss?uid=swg1IV82421
www-01.ibm.com/support/docview.wss?uid=swg1IV84184
www.securityfocus.com/bid/92193
www.securitytracker.com/id/1036481