1 files changed, 4 insertions, 1 deletions

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 0661e696a1dd..47ca59e52e71 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1056,8 +1056,11 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
 
         hdr = (struct ieee80211_hdr *) skb->data;
 
-        if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+        if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
                 tx->sta = rcu_dereference(sdata->u.vlan.sta);
+                if (!tx->sta && sdata->dev->ieee80211_ptr->use_4addr)
+                        return TX_DROP;
+        }
         if (!tx->sta)
                 tx->sta = sta_info_get(sdata, hdr->addr1);