From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <netdev-owner@vger.kernel.org>
Received: from shards.monkeyblade.net ([184.105.139.130]:55450 "EHLO
        shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1751220AbeCGSgw (ORCPT
        <rfc822;netdev@vger.kernel.org>); Wed, 7 Mar 2018 13:36:52 -0500
Date: Wed, 07 Mar 2018 13:36:51 -0500 (EST)
Message-Id: <20180307.133651.2158882031803330781.davem@davemloft.net>
To: eric.dumazet@gmail.com
Cc: netdev@vger.kernel.org, jchapman@katalix.com, g.nault@alphalink.fr
Subject: Re: [PATCH net] l2tp: do not accept arbitrary sockets
From: David Miller <davem@davemloft.net>
In-Reply-To: <1520351693.109662.17.camel@gmail.com>
References: <1520351693.109662.17.camel@gmail.com>
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: netdev-owner@vger.kernel.org
List-ID: <netdev.vger.kernel.org>

From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Tue, 06 Mar 2018 07:54:53 -0800

> From: Eric Dumazet <edumazet@google.com>
> 
> syzkaller found an issue caused by lack of sufficient checks
> in l2tp_tunnel_create()
> 
> RAW sockets can not be considered as UDP ones for instance.
> 
> In another patch, we shall replace all pr_err() by less intrusive
> pr_debug() so that syzkaller can find other bugs faster.
 ...
> Fixes: fd558d186df2 ("l2tp: Split pppol2tp patch into separate l2tp and ppp parts")
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> Reported-by: syzbot <syzkaller@googlegroups.com>

Applied and queued up for -stable, thanks.