Patch "ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()" has been added to the 4.4-stable tree

Patch "ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()" 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

    ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()

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:
     ipv6-pointer-math-error-in-ip6_tnl_parse_tlv_enc_lim.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 Feb 14 16:29:59 PST 2017
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 1 Feb 2017 11:46:32 +0300
Subject: ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()

From: Dan Carpenter <dan.carpenter@oracle.com>


[ Upstream commit 63117f09c768be05a0bf465911297dc76394f686 ]

Casting is a high precedence operation but "off" and "i" are in terms of
bytes so we need to have some parenthesis here.

Fixes: fbfa743a9d2a ("ipv6: fix ip6_tnl_parse_tlv_enc_lim()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 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
@@ -520,7 +520,7 @@ __u16 ip6_tnl_parse_tlv_enc_lim(struct s
 				if (i + sizeof(*tel) > optlen)
 					break;
 
-				tel = (struct ipv6_tlv_tnl_enc_lim *) skb->data + off + i;
+				tel = (struct ipv6_tlv_tnl_enc_lim *)(skb->data + off + i);
 				/* return index of option if found and valid */
 				if (tel->type == IPV6_TLV_TNL_ENCAP_LIMIT &&
 				    tel->length == 1)


Patches currently in stable-queue which might be from dan.carpenter@oracle.com are

queue-4.4/ipv6-pointer-math-error-in-ip6_tnl_parse_tlv_enc_lim.patch