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Date: Thu, 29 Oct 2009 08:56:17 +0000 (GMT)
From: Mark J Cox <>
cc: "Steven M. Christey" <>
Subject: Re: CVE request: kvm: check cpl before emulating
 debug register access

On Thu, 29 Oct 2009, Eugene Teo wrote:
> Quote from the upstream commit:
> "Debug registers may only be accessed from cpl 0.  Unfortunately, vmx will 
> code to emulate the instruction even though it was issued from guest 
> userspace, possibly leading to an unexpected trap later."
> Introduced in v2.6.30-rc1; Fixed in v2.6.32-rc1.

Please use CVE-2009-3722


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