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    SubjectRe: 2.2.0 SECURITY
    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....

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