Xen Drivers/passthrough/vtd/intremap.c Set_msi_source_id() Function VT-D Configuration Incorrect Interrupt Injection Local DoS Vulnerability
22 Feb. 2013
Summary
Xen drivers/passthrough/vtd/intremap.c set_msi_source_id() Function VT-d is prone to a configuration incorrect interrupt injection local DoS vulnerability.
Xen contains a flaw in the set_msi_source_id() function in drivers/passthrough/vtd/intremap.c that may allow a local denial of service. The issue is triggered when handling VT-d interrupts. With a specially crafted interupt, a local attacker can inject incorrect interrupts and cause the program to crash. This will result in a loss of availability..