On Tue, 27 Nov 2007 00:35:46 +0100
Manuel Bouyer <bouyer@antioche.eu.org> wrote:

> Hi,
> can anyone see a bad side effect or security issue of having a
> process's page table mapped in the process's VM space ?
> 
What is in the page table entries?  Can a user process overwrite them?
In particular, can a user process change which physical addresses are
referred to by arbitrary virtual addresses?  If so, there's a very
serious security issue.



		--Steve Bellovin, http://www.cs.columbia.edu/~smb