> You can't have the kernel reset the processor, because I'll just rewrite
> the reset commands in the malicious microcode to noop.
>
> Can of worms indeed. Anyone know if the mainframers thought of this?
There is no problem. If you can rewrite the bios you can also rewrite the
linux kernel, the filesystems or just about anything else. This is no
different than any other security problems - you need either to obtain
privileges under the os or manage to take control of thecomputer while the
os is not running.
Peter
-- Peter Svensson ! Pgp key available by finger, fingerprint: <petersv@psv.nu> ! 8A E9 20 98 C1 FF 43 E3 07 FD B9 0A 80 72 70 AF <petersv@df.lth.se> ! ------------------------------------------------------------------------ Remember, Luke, your source will be with you... always...
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