diff --git a/net/sched/sch_skbprio.c b/net/sched/sch_skbprio.c
index 52c0b6d8f1d79666027bc93023d61ac772ae5161..3d9de52849bc5d919a6aca8ae8b54fbf30a28e81 100644
--- a/net/sched/sch_skbprio.c
+++ b/net/sched/sch_skbprio.c
@@ -173,6 +173,9 @@ static int skbprio_change(struct Qdisc *sch, struct nlattr *opt,
 {
 	struct tc_skbprio_qopt *ctl = nla_data(opt);
 
+	if (opt->nla_len != nla_attr_size(sizeof(*ctl)))
+		return -EINVAL;
+
 	sch->limit = ctl->limit;
 	return 0;
 }