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SubjectRe: linux-kernel-digest V1 #922
>From: "Richard B. Johnson" <root@analogic.com>
>Date: Thu, 29 May 1997 20:15:59 -0400 (EDT)
>Subject: 2.1.41 <not SMP>
>
>A kernel crash, "Unable to handle NULL Pointer dereference at 000000"...
>will be caused by::
>
># od -x /dev/kmem
>
>I used to be able to __READ__ page zero. I think you can't do that anymore.
>If so, /dev/kmem should not access the restricted page. Users can crash
>the machine with simple commands.
>
>Cheers,
> Dick

Not a big point, but your command shows a "#" implying root did this.
Can a normal user cause a crash, also?
I'm going to try this on my 2.1.40 box after sending this letter.

Dan
--
Daniel Linder W:(402) 393-3997 C:(402) 490-1673 P:(402) 579-1615
National / TechTeam WebCentric
www.webcentric.net / www.techteam.com


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