Re: [kernel-hardening] Re: [PATCH] x86: make IDT read-only

From: H. Peter Anvin
Date: Tue Apr 09 2013 - 14:57:09 EST

On 04/09/2013 11:46 AM, Kees Cook wrote:
> Ah-ha! Yes, I see now when comparing the debug/kernel_page_tables
> reports. It's just the High Kernel Mapping that we care about.
> Addresses outside that range are less of a leak. Excellent, then GDT
> may not be a problem. Whew.

It does beg the question if we need to randomize kmalloc... which could
have issues by itself.


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

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