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Secunia integrated with Microsoft WSUS 
http://secunia.com/blog/71/



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TITLE:
Linux Kernel KVM "pit_ioport_read()" Denial of Service

SECUNIA ADVISORY ID:
SA38405

VERIFY ADVISORY:
http://secunia.com/advisories/38405/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users in a KVM guest to cause a DoS
(Denial of Service).

The vulnerability is caused due to an error within the
"pit_ioport_read()" function in arch/x86/kvm/i8254.c, which can be
exploited to e.g. crash the KVM host by reading from the "/dev/port"
device in a KVM guest.

Successful exploitation may require root privileges in the KVM guest.

SOLUTION:
Fixed in the KVM GIT repository.

PROVIDED AND/OR DISCOVERED BY:
Reported in a Red Hat bug.

ORIGINAL ADVISORY:
https://bugzilla.redhat.com/show_bug.cgi?id=560887
http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git;a=commit;h=336f40a728b9a4a5db5e1df5c89852c79ff95604

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