--- /dev/null
+--- a/net80211/ieee80211_input.c
++++ b/net80211/ieee80211_input.c
+@@ -238,6 +238,9 @@
+ if (vap->iv_opmode == IEEE80211_M_MONITOR)
+ goto out;
+
++ if (!skb->data)
++ goto out;
++
+ if (skb->len < sizeof(struct ieee80211_frame_min)) {
+ IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
+ ni->ni_macaddr, NULL,
#define IEEE80211_QOS_TXOP 0x00ff
--- a/net80211/ieee80211_input.c
+++ b/net80211/ieee80211_input.c
-@@ -414,7 +414,7 @@
+@@ -417,7 +417,7 @@
tid = 0;
rxseq = le16toh(*(__le16 *)wh->i_seq);
if ((wh->i_fc[1] & IEEE80211_FC1_RETRY) &&