diff options
| author | Matthias Schiffer <mschiffer@universe-factory.net> | 2017-02-23 17:19:41 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-24 11:42:55 -0500 |
| commit | 4e37d6911f36545b286d15073f6f2222f840e81c (patch) | |
| tree | 4139f508e0ceca2b96802686c7eb4683d1cfa8da /drivers | |
| parent | 681a55d71799b575f46fe94121728cf67460d1c3 (diff) | |
| download | linux-4e37d6911f36545b286d15073f6f2222f840e81c.tar.bz2 | |
vxlan: correctly validate VXLAN ID against VXLAN_N_VID
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/vxlan.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 556953f53437..268c2a12e61d 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2675,7 +2675,7 @@ static int vxlan_validate(struct nlattr *tb[], struct nlattr *data[]) 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; } |