[3.16.y-ckt extended stable] Patch "vxlan: fix a free after use" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    vxlan: fix a free after use

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt1.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 0ec24ad14d3cbcaeeadfe9267e4171c3362c9d58 Mon Sep 17 00:00:00 2001
From: Li RongQing <roy.qing.li at gmail.com>
Date: Fri, 17 Oct 2014 14:06:16 +0800
Subject: vxlan: fix a free after use

commit 7a9f526fc3ee49b6034af2f243676ee0a27dcaa8 upstream.

pskb_may_pull maybe change skb->data and make eth pointer oboslete,
so eth needs to reload

Fixes: 91269e390d062 ("vxlan: using pskb_may_pull as early as possible")
Cc: Eric Dumazet <edumazet at google.com>
Signed-off-by: Li RongQing <roy.qing.li at gmail.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/net/vxlan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 53b5bdeb45af..63ae2e3badab 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1952,6 +1952,7 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev)
 				    msg->icmph.icmp6_type == NDISC_NEIGHBOUR_SOLICITATION)
 					return neigh_reduce(dev, skb);
 		}
+		eth = eth_hdr(skb);
 #endif
 	}

--
2.1.0