lkml.org 
[lkml]   [1998]   [Nov]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subject[OFFTOPIC] Re: /dev/nvram on my Celebris
On Thu, 26 Nov 1998, Neil Conway wrote:

> 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


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:45    [from the cache]
©2003-2011 Jasper Spaans. Advertise on this site