Re: disk-destroyer.c

Dan Hollis (goemon@sasami.anime.net)
Fri, 21 Jul 2000 11:10:29 -0700 (PDT)


On Fri, 21 Jul 2000, James Sutherland wrote:
> On Thu, 20 Jul 2000, Dan Hollis wrote:
> > Ok, you prevent program from sending DISKTOBRICK IOCTL as root...
> > So disk2brick.c will just bypass the kernel API and bit-bang on the IDE
> > controller directly...
> If a usermode app can hit the hardware directly like that, there's
> something VERY broken...

James, you can erase BIOS flash from linux userland, you could probably
even physically destroy it too. I can think of great ways of physically
destroying one's CPU and maybe even motherboard too, from userland.

This is nothing new.

Is the kernel broken because you can bit-bang the hardware as root? Think
about it.

-Dan

-
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/