AMD buffer overflow protection and Linux
Vincent
pros-n-cons at bak.rr.com
Tue Feb 24 03:52:07 UTC 2004
On Mon, 23 Feb 2004 21:29:15 -0500
James Drabb <JDrabb at tampabay.rr.com> wrote:
> Has anyone hear about this:
> http://tinyurl.com/zllg
>
> What about support for Linux? This could come in very handy and I
> certainly do not want to see this as some MS only feature : (
It will work on linux just fine. I beleive this is a 'patch' for 386 that
all other arch's and kernels have supported forever, AMD and Intel are behind here.
but once its put in the hardware using it is trivial. for IA-32 and AMD-32 there
is software workarounds like exec-shield, mprotect(), pax, propolice and SElinux
using a type of jail to contain the problem. So not only is linux going to have it
but its going to do better AFIK.
>
> One quote from the article:
>
> Sunnyvale, Calif.-based AMD says it has included code in all its 64-bit
> Athlon and Opteron-brand processors that Microsoft soon plans to use to
> make it far more difficult for hackers to exploit buffer overflows --
> one of the most widespread computer security holes.
>
> It sounds like this code is already there. Any support in Linux yet?
> It would be nice if this support was in Linux first : )
>
> Jim Drabb
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