From: H. Peter Anvin
Date: Tue Mar 19 2013 - 21:05:57 EST

On 03/19/2013 06:02 PM, H. Peter Anvin wrote:
> Looking at it in detail, EVERYTHING in CAP_SYS_RAWIO has the possibility
> of compromising the kernel, because they let device drivers be bypassed,
> which means arbitrary DMA, which means you have everything.

Well, *unless* you have an iommu that you *actually know* is protecting you.


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

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