diff options
| author | Matthias Schiffer <mschiffer@universe-factory.net> | 2017-02-23 17:19:41 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-22 12:04:13 +0100 |
| commit | 51a219a1371ed26ce45acc8209d6064257d00f70 (patch) | |
| tree | 8e506652b280638157cfee584dfafb3fc53521f9 /drivers/net/vxlan.c | |
| parent | 0c0be310ba29e4a053e8aac934aebe590c5da909 (diff) | |
vxlan: correctly validate VXLAN ID against VXLAN_N_VID
[ 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>
Diffstat (limited to 'drivers/net/vxlan.c')
| -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 6fa8e165878e..590750ab6564 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2600,7 +2600,7 @@ 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; } |