diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 7320d676ce3a..087c0c442e23 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -10542,6 +10542,8 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
 		if (!info->attrs[NL80211_ATTR_MLD_ADDR])
 			return -EINVAL;
 		req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
+		if (!is_valid_ether_addr(req.ap_mld_addr))
+			return -EINVAL;
 	}
 
 	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,