Re: [PATCH] x86: Lock down MSR writing in secure boot

From: H. Peter Anvin
Date: Fri Feb 08 2013 - 14:43:13 EST

On 02/08/2013 11:18 AM, Kees Cook wrote:
No. CAP_RAWIO is for reading. Writing needs a much stronger check.


If so, I suspect we need to do this for *all* raw I/O... but I keep wondering how much more sensitive writing really is than reading.


H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.

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