From: Eric Dumazet <edumazet@google.com>
Date: Thu, 20 Dec 2012 16:00:27 +0000 (+0000)
Subject: ip_gre: fix possible use after free
X-Git-Tag: v3.8-rc2~19^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f7e75ba1772bc712af0070655ffd8b09906993b5;p=pandora-kernel.git

ip_gre: fix possible use after free

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@google.com>
Cc: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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