From f8d54afc4c7a4c41deaa43fbcfffc2976094d342 Mon Sep 17 00:00:00 2001
From: Robert Shearman <rshearma@brocade.com>
Date: Fri, 6 Mar 2015 10:47:00 +0000
Subject: [PATCH] mpls: Properly validate RTA_VIA payload length

If the nla length is less than 2 then the nla data could be accessed
beyond the accessible bounds. So ensure that the nla is big enough to
at least read the via_family before doing so. Replace magic value of
2.

Fixes: 03c0566542f4 ("mpls: Basic support for adding and removing routes")
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Robert Shearman <rshearma@brocade.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
Reading git-format-patch failed