tree bd55bad628a3ddcbc94d6d75131f318732aec60a
parent 5c4b934f89defcc158d1ceda8294b1e534197c75
author Robert Shearman <rshearma@brocade.com> 1425638820 +0000
committer David S. Miller <davem@davemloft.net> 1425673146 -0500

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>