netdev - Re: [Security] [PATCH] infinite recursion in netlink

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Message-ID: <20070426062601.GH2819@sequoia.sous-sol.org>
Date:	Wed, 25 Apr 2007 23:26:01 -0700
From:	Chris Wright <chrisw@...s-sol.org>
To:	Greg KH <greg@...ah.com>
Cc:	security@...nel.org, netdev@...r.kernel.org, jaco@...on.co.za,
	kuznet@....inr.ac.ru, torvalds@...ux-foundation.org,
	David Miller <davem@...emloft.net>
Subject: Re: [Security] [PATCH] infinite recursion in netlink

* Chris Wright (chrisw@...s-sol.org) wrote:
> * Greg KH (greg@...ah.com) wrote:
> > fyi, here's the patch that I applied, perhaps 2.6.20 needed something
> > else too?
> <snip>
> > @@ -809,7 +815,7 @@ static void nl_fib_input(struct sock *sk
> >  
> >  	nl_fib_lookup(frn, tb);
> >  	
> > -	pid = nlh->nlmsg_pid;           /*pid of sending process */
> > +	pid = NETLINK_CB(skb).pid;       /* pid of sending process */
> 
> That's the important bit.  I'm testing against 2.6.20.8 right now.

Working fine here.  Any chance you booted a stale kernel?
If not, what's your nl_fib_input+0xe4.  Any chance that's
actually in nl_fib_lookup?
-
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