| Date | Tue, 19 Mar 2013 18:05:35 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 01/12] Security: Add CAP_COMPROMISE_KERNEL |
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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.
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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