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

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Date:	Wed, 25 Apr 2007 22:32:01 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	greg@...ah.com
Cc:	torvalds@...ux-foundation.org, kuznet@....inr.ac.ru,
	security@...nel.org, netdev@...r.kernel.org, jaco@...on.co.za
Subject: Re: [Security] [PATCH] infinite recursion in netlink

From: Greg KH <greg@...ah.com>
Date: Wed, 25 Apr 2007 22:29:12 -0700

> On Wed, Apr 25, 2007 at 01:15:12PM -0700, Linus Torvalds wrote:
> > 
> > 
> > On Wed, 25 Apr 2007, Alexey Kuznetsov wrote:
> > > 
> > > Reply to NETLINK_FIB_LOOKUP messages were misrouted back to kernel,
> > > which resulted in infinite recursion and stack overflow.
> 
> Wait, I just had the bright idea of actually testing this before I
> pushed out a 2.6.20.9 kernel with another fix in it, and nope, still
> crashes, even with this patch  :(
> 
> Full stackdump in a picture (forgot to have netconsole running) at:
> 	http://www.kroah.com/netlink_oops.jpg
> 
> Any thoughts?
> 
> I'll go try 2.6.21 now too...

Crap.  We should have let this one simmer for a day to get
more eyes on it.

Thanks for catching this Greg.

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