> On this (bios destruction by rogue root) thread, someone already
> suggested that a reboot wasn't necessary.
>
> This presumably means using ioperm() etc. but I guess this would only
> work if the BIOS reflash was controlled by I/O and not by memory map (or
> both).
It doesn't matter. Chose one of these:
/proc/kcore
/dev/mem
/dev/kmem
/dev/port
If they don't exist create the /dev files with mknod, or do
# ismod destroy_bios.o
and run arbitrary code in kernel mode.
This is just a sampling, there are plenty of other ways. Root can do
anything, there is no way around it, get this into you head ;-)
Rafael
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