Patch "sit: reload iphdr in ipip6_rcv" has been added to the 4.4-stable tree

Patch "sit: reload iphdr in ipip6_rcv" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    sit: reload iphdr in ipip6_rcv

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     sit-reload-iphdr-in-ipip6_rcv.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Tue Apr 10 10:31:53 CEST 2018
From: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Date: Sun, 4 Jun 2017 14:43:43 +0800
Subject: sit: reload iphdr in ipip6_rcv

From: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>


[ Upstream commit b699d0035836f6712917a41e7ae58d84359b8ff9 ]

Since iptunnel_pull_header() can call pskb_may_pull(),
we must reload any pointer that was related to skb->head.

Fixes: a09a4c8dd1ec ("tunnels: Remove encapsulation offloads on decap")
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv6/sit.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -690,6 +690,7 @@ static int ipip6_rcv(struct sk_buff *skb
 
 		if (iptunnel_pull_header(skb, 0, htons(ETH_P_IPV6)))
 			goto out;
+		iph = ip_hdr(skb);
 
 		err = IP_ECN_decapsulate(iph, skb);
 		if (unlikely(err)) {


Patches currently in stable-queue which might be from yanhaishuang@cmss.chinamobile.com are

queue-4.4/sit-reload-iphdr-in-ipip6_rcv.patch