On 04/09/2013 11:54 AM, Eric Northup wrote:
> 
> The GDT is a problem if the address returned by 'sgdt' is
> kernel-writable - it doesn't necessarily reveal the random offset, but
> I'm pretty sure that writing to the GDT could cause privilege
> escalation.
> 

That is a pretty safe assumption...

        -hpa


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