From: Matthias Schiffer mschiffer@universe-factory.net
This patch has been added to the stable tree. If you have any objections, please let us know.
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[ 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: Sasha Levin alexander.levin@microsoft.com --- drivers/net/vxlan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 422a9379a644..1ad3700ed9c7 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2432,7 +2432,7 @@ 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; }