Re: 2.2.0 SECURITY (fwd)

[stany () PET NOTBSD ORG (//Stany)]

Later on down the thread there are other people then Dan Burcaw who say
that the bug crashes their boxes too.

I suggest reading the thread on Linux Kernel archives for more
information.  See information at the bottof of forwarded message for
information.

---------- Forwarded message ----------
Date: Tue, 26 Jan 1999 22:08:03 -0700 (MST)
From: Dan Burcaw <dburcaw () terraplex com>
To: Richard Gooch <rgooch () atnf csiro au>
Cc: linux-kernel () vger rutgers edu
Subject: Re: 2.2.0 SECURITY


This has been tested and causes crashes on:

AMD K6-2 350
AMD K6-2 400
Intel 486 SX25 w/ P90 Overdrive

On Wed, 27 Jan 1999, Richard Gooch wrote:

> Dan Burcaw writes:
> > There is a bug that works only on the 2.2.0 kernel that will allow root
> > and non-root users to crash the machine (the system reboots).
> >
> > To replicate this bug do following:
> >
> > Take any core file, and as normal user or root run: ldd core
> >
> > The machine will reboot, saying that it cannot get execution permissions
> > for ./core
> >
> > As far as I can tell, this problem only affects x86 machines running
> > 2.2.0. I know that PPC is not affected.
>
> Just tried this on a dual PPro:
>
> % cat > try.c
> void main ()
> {
>     * (unsigned int *) 0 = 0;
> }
> % cc -o try try.c
> % ./try
> Segmentation fault
> % ldd core
> % dmesg | tail -1
> perfmon: v0.4 (19990127) Richard Gooch (rgooch () atnf csiro au), 2 counters
>
> Nope, doesn't cause a reboot, panic, Oops or any problems
> here. Running as root makes no difference.
>
>                               Regards,
>
>                                       Richard....


Dan

Terra Firma Design & Terra Soft Solutions, Inc.

 voice   (970) 416-9821 in Fort Collins
 email   dburcaw () terraplex com
 website http://www.terraplex.com/



-
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/

--
+-----------------------------------------------------------------------------+
|         Stanislav N. Vardomskiy - Procurator Odiosus Ex Infernis[TM]        |
|        This message is brought to you by letters jey, ow, el and tee.       |
|              Jolt!  For all the sugar and twice the caffeine.               |
+-----------------------------------------------------------------------------+