xen-kernel -- CPU lockup during exception delivery
The Xen Project reports:
A malicious HVM guest administrator can cause a denial of service.
Specifically, prevent use of a physical CPU for a significant,
perhaps indefinite period. If a host watchdog (Xen or dom0) is in
use, this can lead to a watchdog timeout and consequently a reboot
of the host. If another, innocent, guest, is configured with a
watchdog, this issue can lead to a reboot of such a guest.
Copyright © 2003-2005 Jacques Vidrine and contributors.
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