Re: Local Linux Crash (fwd)

From: Kurt Roeckx (Q@ping.be)
Date: Sat Mar 25 2000 - 06:25:16 EST

  • Next message: Kurt Roeckx: "2.3.99-pre3: can't boot of hdb"

    On Sat, Mar 25, 2000 at 07:23:12AM +0100, Mike Galbraith wrote:
    > On Fri, 24 Mar 2000, ADAM Sulmicki wrote:
    >
    > > FYI.
    > >
    > > I'm just messenger.
    > > I saw it on bugtraq and would pass it.
    > > Don't shoot me
    > > :-)
    > >
    > > ---------- Forwarded message ----------
    > > Date: Fri, 24 Mar 2000 18:42:03 +0200
    > > From: Javor Ninov <javor@multigroup-bg.com>
    > > To: BUGTRAQ@SECURITYFOCUS.COM
    > > Subject: Local Linux Crash
    > >
    > > Tested on SlackWare 7.0 2.2.14
    > > After short time this will crash Linux box:
    > > su `cat /dev/urandom` > /dev/null |< su `cat /dev/urandom`&
    > >
    > > for a better efect start it several times :-))
    > > This can be done be any regular user !
    >
    > On 2.3.99x at least, this only acts as a resource hog. After setting
    > limits, bash grew steadily until...
    >
    > bash: xrealloc: cannot reallocate 4194304 bytes (0 bytes allocated)
    >
    > ...and then politely exited.

    I started it 5 times, no limits. The first 3 did that too.

    Then VM killed 1 bash, and then killed klogd every second, couldn't do a
    thing with the system anymore.

    This was using 2.3.51

    Kurt

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