From: Li RongQing <roy.qing.li@gmail.com>
Date: Fri, 17 Oct 2014 08:53:47 +0000 (+0800)
Subject: ipv4: fix a potential use after free in fou.c
X-Git-Tag: fixes-against-v3.18-rc2~61^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d8f00d27105a1553a13d4a96c3eb4544f70ca908;p=pandora-kernel.git

ipv4: fix a potential use after free in fou.c

pskb_may_pull() maybe change skb->data and make uh pointer oboslete,
so reload uh and guehdr

Fixes: 37dd0247 ("gue: Receive side for Generic UDP Encapsulation")
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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