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SYNTHESIS OF THE VULNERABILITY

A local attacker can use vmstate_xhci_event of QEMU, in order to
trigger a denial of service.

Impacted products: Unix (platform)

Severity: 1/4

Creation date: 27/08/2014

DESCRIPTION OF THE VULNERABILITY

The xHCI (eXtensible Host Controller Interface) interface is used
by USB.

The QEMU hw/usb/hcd-xhci.c file defines the vmstate_xhci_event
list. However, this list is not ended. Its usage thus triggers an
access to an invalid memory area.

A local attacker can therefore use vmstate_xhci_event of QEMU, in
order to trigger a denial of service.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/QEMU-denial-of-service-via-vmstate-xhci-event-15232