[9251] in bugtraq
Re: 2.2.0 SECURITY (fwd)
daemon@ATHENA.MIT.EDU (//Stany)
Wed Jan 27 13:31:36 1999
Date: Wed, 27 Jan 1999 03:14:29 -0500
Reply-To: //Stany <stany@PET.NOTBSD.ORG>
From: //Stany <stany@PET.NOTBSD.ORG>
X-To: Luc Lanthier <firesoul@pet.notbsd.org>
To: BUGTRAQ@NETSPACE.ORG
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/
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