From: "szonyi calin" <caszonyi@yahoo.com>
To: Jesper Juhl <juhl-lkml@dif.dk>, linux-kernel@vger.kernel.org
Cc: Bastiaan Spandaw <lkml@becobaf.com>,
Tomas Szepe <szepe@pinerecords.com>,
Max Valdez <maxvalde@fis.unam.mx>
Subject: Re: 2.6.1-rc1 affected?
Date: Tue, 6 Jan 2004 03:47:23 +0100 (CET) [thread overview]
Message-ID: <20040106024723.4579.qmail@web40605.mail.yahoo.com> (raw)
In-Reply-To: <Pine.LNX.4.56.0401060221170.7597@jju_lnx.backbone.dif.dk>
--- Jesper Juhl <juhl-lkml@dif.dk> a écrit : >
> On Tue, 6 Jan 2004, Max Valdez wrote:
>
> > At least it hangs a redhat 7.2 kernel
> >
> > I will test it further tomorrow, but it looks like a good
> proof to me
> >
> > > >
> > > > > There _is_ an exploit:
> > http://isec.pl/vulnerabilities/isec-0013-mremap.txt
> > > > > "Since no special privileges are required to use the
> mremap(2)
> > system
> > > > ...
> > > >
> > > > I will not believe the claim until I've seen the code.
> > >
> > > Not sure if this works or not.
> > > According to a slashdot comment this is proof of concept
> code.
> > >
> > > http://linuxfromscratch.org/~devine/mremap_poc.c
> > >
> > > Regards,
> > >
> > > Bastiaan
> > >
>
> On my box that program is a very effective 'instant reboot'.
>
on mine just a segfault :-)
sony@grinch -04:47:32- 0 jobs, ver 2.05b.0 3
/~/schule $ gcc -o mremap_poc mremap_poc.c
sony@grinch -04:47:35- 0 jobs, ver 2.05b.0 3
/~/schule $ ./mremap_poc
Segmentation fault
> The instant I ran it from a xterm my screen went black, the
> music I was
> listening to from a CD stopped and the machine rebooted.
> The running kernel was 2.6.1-rc1-mm1
>
maybe you were running the program as root ?
>
> - Jesper Juhl
>
> -
Calin
=====
--
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the xterm you want to type in.
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next prev parent reply other threads:[~2004-01-06 2:47 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-05 16:31 2.6.1-rc1 affected? Markus Hästbacka
2004-01-05 16:41 ` [patchlet link] " Maciej Soltysiak
2004-01-05 16:46 ` Linus Torvalds
2004-01-05 18:14 ` Markus Hästbacka
2004-01-05 18:31 ` Linus Torvalds
2004-01-05 19:04 ` Markus Hästbacka
2004-01-05 19:38 ` GCS
2004-01-05 22:48 ` Tomas Szepe
2004-01-06 0:23 ` Bastiaan Spandaw
2004-01-06 1:09 ` Max Valdez
2004-01-06 1:25 ` Jesper Juhl
2004-01-06 1:31 ` Hugang
2004-01-06 1:43 ` Hugang
2004-01-06 2:47 ` szonyi calin [this message]
2004-01-06 3:24 ` Jonathan Higdon
2004-01-06 3:51 ` szonyi calin
2004-01-06 6:39 ` Jakob Oestergaard
2004-01-06 9:26 ` Giuliani Ivan
[not found] <1aFW7-39l-11@gated-at.bofh.it>
[not found] ` <1aG5G-3mf-21@gated-at.bofh.it>
2004-01-06 12:44 ` Michal Schmidt
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