diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index aae4f3f6bcba..b1a6c1670091 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -2157,6 +2157,11 @@ static int nldev_stat_set_counter_dynamic_doit(struct nlattr *tb[],
 
 	nla_for_each_nested(entry_attr, tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS],
 			    rem) {
+		if (nla_len(entry_attr) != sizeof(u32)) {
+			ret = -EINVAL;
+			goto out;
+		}
+
 		index = nla_get_u32(entry_attr);
 		if ((index >= stats->num_counters) ||
 		    !(stats->descs[index].flags & IB_STAT_FLAG_OPTIONAL)) {