dcb: Add missing error check in dcb_ieee_set()

Missing error checking before nla_parse_nested().

Reported-by: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index f54c784e2b5bfcf3aa1bb71146125db05f6ba67c..e954d4c6590c8af25f564ebd65cdde94f86a51e1 100644 (file)
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -1368,6 +1368,9 @@ static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb,
        if (!ops)
                return err;
 
+       if (!tb[DCB_ATTR_IEEE])
+               return -EINVAL;
+
        err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
                               tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
        if (err)