diff --git a/net/wireless/core.c b/net/wireless/core.c
index 9698fe709251..55ec9be9feb7 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -1007,7 +1007,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
 			rdev->devlist_generation++;
 			cfg80211_mlme_purge_registrations(wdev);
 #ifdef CONFIG_CFG80211_WEXT
-			kfree(wdev->wext.keys);
+			kzfree(wdev->wext.keys);
 #endif
 		}
 		/*
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 11120bb14162..0f47948c572f 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -496,6 +496,8 @@ static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 			err = 0;
 		if (!err) {
 			if (!addr) {
+				memset(wdev->wext.keys->data[idx], 0,
+				       sizeof(wdev->wext.keys->data[idx]));
 				wdev->wext.keys->params[idx].key_len = 0;
 				wdev->wext.keys->params[idx].cipher = 0;
 			}