diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c
index 573b6b15a446..d3dd5448d723 100644
--- a/net/wireless/wext-sme.c
+++ b/net/wireless/wext-sme.c
@@ -319,6 +319,14 @@ int cfg80211_wext_siwgenie(struct net_device *dev,
 		return 0;
 
 	if (ie_len) {
+		const struct element *elem;
+
+		for_each_element(elem, extra, ie_len)
+			/* nothing */
+
+		if (!for_each_element_completed(elem, extra, ie_len))
+			return -EINVAL;
+
 		ie = kmemdup(extra, ie_len, GFP_KERNEL);
 		if (!ie)
 			return -ENOMEM;