funsec mailing list archives

Re: Description of the Intel CPU bugs


From: Gadi Evron <ge () linuxbox org>
Date: Thu, 28 Jun 2007 11:05:04 -0500

On 2007-06-28 11:55-0400, Dude VanWinkle wrote:
On 6/28/07, Larry Seltzer <Larry () larryseltzer com> wrote:


de Raadt makes reference to BIOS vendors providing fixes but there's a fix
from Microsoft in a KB article at
http://support.microsoft.com/?kbid=936357. They call it a
"microcode reliability update".

Does this mean that microcode in these CPUs is actually field-upgradable?


Yes. Intel has released patches before for their CPU's. I remember
applying some patches for the Pentium III some years back.

These patches in most cases would be work-arounds for
stability/replacement functionality. They can be bypassed. This is a
real patch, band-aid like. Or am I wrong?





-JP
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