Patch "ip6_tunnel: fix potential NULL pointer dereference" has been added to the 3.14-stable tree

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

    ip6_tunnel: fix potential NULL pointer dereference

to the 3.14-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:
     ip6_tunnel-fix-potential-null-pointer-dereference.patch
and it can be found in the queue-3.14 subdirectory.

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


>From foo@baz Wed May 28 21:03:54 PDT 2014
From: Susant Sahani <susant@xxxxxxxxxx>
Date: Sat, 10 May 2014 00:11:32 +0530
Subject: ip6_tunnel: fix potential NULL pointer dereference

From: Susant Sahani <susant@xxxxxxxxxx>

[ Upstream commit c8965932a2e3b70197ec02c6741c29460279e2a8 ]

The function ip6_tnl_validate assumes that the rtnl
attribute IFLA_IPTUN_PROTO always be filled . If this
attribute is not filled by  the userspace application
kernel get crashed with NULL pointer dereference. This
patch fixes the potential kernel crash when
IFLA_IPTUN_PROTO is missing .

Signed-off-by: Susant Sahani <susant@xxxxxxxxxx>
Acked-by: Thomas Graf <tgraf@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/ipv6/ip6_tunnel.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1564,7 +1564,7 @@ static int ip6_tnl_validate(struct nlatt
 {
 	u8 proto;
 
-	if (!data)
+	if (!data || !data[IFLA_IPTUN_PROTO])
 		return 0;
 
 	proto = nla_get_u8(data[IFLA_IPTUN_PROTO]);


Patches currently in stable-queue which might be from susant@xxxxxxxxxx are

queue-3.14/ip6_tunnel-fix-potential-null-pointer-dereference.patch
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