dcb: Add missing error check in dcb_ieee_set()

Missing error checking before nla_parse_nested(). Reported-by: Mark Rustad <[email protected]> Signed-off-by: John Fastabend <[email protected]> Signed-off-by: David S. Miller <[email protected]>
mrwenhui · Jun 21, 2011 · 4003b65 · 4003b65
1 parent ab6baf9
commit 4003b65
Showing 1 changed file with 3 additions and 0 deletions.
diff --git 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)