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List:       oss-security
Subject:    Re: [oss-security] Re: CVE-2009-1265 kernel: af_rose/x25: Sanity check the maximum user frame size
From:       Marcus Meissner <meissner () suse ! de>
Date:       2009-04-23 8:11:18
Message-ID: 20090423081118.GA17366 () suse ! de
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On Thu, Apr 23, 2009 at 03:46:08PM +0800, Eugene Teo wrote:
> Marcus Meissner wrote:
> > On Thu, Apr 23, 2009 at 02:54:06PM +0800, Eugene Teo wrote:
> > > Willy Tarreau wrote:
> > > > Hi Eugene,
> > > > 
> > > > On Wed, Apr 08, 2009 at 03:58:55PM +0800, Eugene Teo wrote:
> > > > > {nr,rose,x25}_sendmsg() functions need to have sanity checks on the
> > > > > packet size, otherwise the sizes can wrap and end up sending garbage.
> > > > > 
> > > > > http://bugzilla.kernel.org/show_bug.cgi?id=10423
> > > > > http://git.kernel.org/linus/83e0bbcbe2145f160fbaa109b0439dae7f4a38a9
> > > > > http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-1265
> > > > > 
> > > > > This affects both 2.4.x and 2.6.x if CONFIG_{NETROM,ROSE,X25} are enabled.
> > > > I already have it in my queue, just did not have time to merge it yet.
> > > > Thanks for the reminder anyway, I really appreciate it ;-)
> > > You will need this too :)
> > > 
> > > upstream commit: cc29c70dd581f85ee7a3e7980fb031f90b90a2ab
> > > 
> > > Patch "af_rose/x25: Sanity check the maximum user frame size"
> > > (commit 83e0bbcbe2145f160fbaa109b0439dae7f4a38a9) from Alan Cox got
> > > locking wrong. If we bail out due to user frame size being too large,
> > > we must unlock the socket beforehand.
> > 
> > I do not see cc29c70dd581f85ee7a3e7980fb031f90b90a2ab in mainline kernel git
> > yet, in which git does it live?
> 
> Interesting.
> 
> http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git;a=blob;f=queue-2.6.29/net-ne \
> trom-fix-socket-locking.patch;h=146431b88a3a57c98e56570941cd5ad6aeb1498c;hb=2f87957d1eaba126d27066479f25889a4191ebe8
> 

Ah, it is just in net-2.6 currently.

http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git;a=commit;h=cc29c70dd581f85ee7a3e7980fb031f90b90a2ab


Ciao, Marcus


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