Patch "vxlan: correctly validate VXLAN ID against VXLAN_N_VID" has been added to the 4.9-stable tree

Patch "vxlan: correctly validate VXLAN ID against VXLAN_N_VID" has been added to the 4.9-stable tree

[gregkh]

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

    vxlan: correctly validate VXLAN ID against VXLAN_N_VID

to the 4.9-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:
     vxlan-correctly-validate-vxlan-id-against-vxlan_n_vid.patch
and it can be found in the queue-4.9 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 Sat Mar 18 22:03:25 CST 2017
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Thu, 23 Feb 2017 17:19:41 +0100
Subject: vxlan: correctly validate VXLAN ID against VXLAN_N_VID

From: Matthias Schiffer <mschiffer@universe-factory.net>


[ Upstream commit 4e37d6911f36545b286d15073f6f2222f840e81c ]

The incorrect check caused an off-by-one error: the maximum VID 0xffffff
was unusable.

Fixes: d342894c5d2f ("vxlan: virtual extensible lan")
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Acked-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/vxlan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -2637,7 +2637,7 @@ static int vxlan_validate(struct nlattr
 
 	if (data[IFLA_VXLAN_ID]) {
 		__u32 id = nla_get_u32(data[IFLA_VXLAN_ID]);
-		if (id >= VXLAN_VID_MASK)
+		if (id >= VXLAN_N_VID)
 			return -ERANGE;
 	}
 


Patches currently in stable-queue which might be from mschiffer@universe-factory.net are

queue-4.9/vxlan-correctly-validate-vxlan-id-against-vxlan_n_vid.patch