netdev - Re: oops / null deref in __inet6_check_established(), kernel 2.6.29-rc6

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Message-Id: <20090301.212857.264627839.davem@davemloft.net>
Date:	Sun, 01 Mar 2009 21:28:57 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	kyle@...radead.org
Cc:	cebbert@...hat.com, netdev@...r.kernel.org
Subject: Re: oops / null deref in __inet6_check_established(), kernel
 2.6.29-rc6

From: Kyle McMartin <kyle@...radead.org>
Date: Mon, 2 Mar 2009 00:09:19 -0500

> On Fri, Feb 27, 2009 at 10:16:18PM -0500, Kyle McMartin wrote:
> > This only seems to show up when CONFIG_NET_NS is enabled. (Reproduced on
> > git HEAD with that option on, doesn't occur with the option off.)
> > 
> > I will confess complete ignorance to the network stack, but this patch
> > fixes things... ipv4 seems to have the same namespace support, but
> > increments the sock_net, not the twsk_net.
> > 
> > I'll probably put this patch into Fedora, if only to prevent this from
> > being used as a local DoS by an unprivileged user.
> > 
> > Signed-off-by: Kyle McMartin <kyle@...hat.com>
> > 
> 
> Any thoughts? This is a pretty serious issue... Granted we should
> probably just turn CONFIG_NET_NS off entirely, since it's
> underdocumented and should be explicitly labelled as experimental
> instead of just depending on it...

It's in my queue, I just haven't gotten to it yet.

Serious issue or not you have to be patient.
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