netdev - Re: [PATCH] ip_gre: fix possible use after free

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Message-Id: <20121221.131522.1237366130565709662.davem@davemloft.net>
Date:	Fri, 21 Dec 2012 13:15:22 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	erdnetdev@...il.com
Cc:	netdev@...r.kernel.org, yamahata@...inux.co.jp
Subject: Re: [PATCH] ip_gre: fix possible use after free

From: Eric Dumazet <erdnetdev@...il.com>
Date: Thu, 20 Dec 2012 18:00:27 -0800

> From: Eric Dumazet <edumazet@...gle.com>
> 
> Once skb_realloc_headroom() is called, tiph might point to freed memory.
> 
> Cache tiph->ttl value before the reallocation, to avoid unexpected
> behavior.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc: Isaku Yamahata <yamahata@...inux.co.jp>

Applied.
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