From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pablo Neira Ayuso <pablo@netfilter.org>
Subject: Re: conntrackd, internal cache keeps filling up
Date: Tue, 13 May 2014 14:55:09 +0200
Message-ID: <20140513125509.GA3881@localhost>
References: <20140505104058.GA30297@finrod>
 <20140509113129.GA8031@localhost>
 <20140510061743.GA32197@finrod>
 <20140512163538.GA13344@localhost>
 <20140513114535.GA9209@finrod>
 <20140513120400.GA22929@breakpoint.cc>
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Cc: Martin Kraus <lists_mk@wujiman.net>,
	netfilter-devel@vger.kernel.org, netfilter@vger.kernel.org
To: Florian Westphal <fw@strlen.de>
Return-path: <netfilter-owner@vger.kernel.org>
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In-Reply-To: <20140513120400.GA22929@breakpoint.cc>
Sender: netfilter-owner@vger.kernel.org
List-Id: netfilter-devel.vger.kernel.org

On Tue, May 13, 2014 at 02:04:00PM +0200, Florian Westphal wrote:
> Martin Kraus <lists_mk@wujiman.net> wrote:
> > On Mon, May 12, 2014 at 06:35:38PM +0200, Pablo Neira Ayuso wrote:
> > > > current kernel is 3.13.7. 
> > > > 
> > > > we already hit a bug in the official 3.2 kernel packaged with wheezy where 
> > > > our scan for heartbleed vulnerability would cause conntrackd to kernel panic
> > > > the router.
> > > 
> > > Please, provide more information on how to reproduce the problem that
> > > you're noticing. Thank you.
> > 
> > regarding the kernel panic on 3.2 a colleague of mine was using nmap with it's
> > heartbleed plugin
> > 
> > nmap --script ssl-heartbleed -sT -oX logfile.log 10.0.0.0/20
> > 
> > http://nmap.org/nsedoc/scripts/ssl-heartbleed.html
> > 
> > it took about 30 minutes to trigger the problem.
> [..]
> 
> >         NetlinkEventsReliable On
> 
> known broken until at least Linux 3.6, see f.e.
> 
> 5b423f6a40a0327f9d40bc8b97ce9be266f74368
> ("netfilter: nf_conntrack: fix racy timer handling with reliable events")

If they are using latest 3.2, that patch is already there.