Re: 2.2.0 SECURITY (fwd)

From: //Stany (stanyat_private)
Date: Wed Jan 27 1999 - 00:14:29 PST

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    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 <dburcawat_private>
    To: Richard Gooch <rgoochat_private>
    Cc: linux-kernelat_private
    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 (rgoochat_private), 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   dburcawat_private
     website http://www.terraplex.com/
    
    
    
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