package/madwifi/patches/373-sanity_check.patch

   1 --- a/net80211/ieee80211_input.c
   2 +++ b/net80211/ieee80211_input.c
   3 @@ -238,6 +238,9 @@
   4         if (vap->iv_opmode == IEEE80211_M_MONITOR)
   5                 goto out;
   6
   7 +       if (!skb->data)
   8 +               goto out;
   9 +
  10         if (skb->len < sizeof(struct ieee80211_frame_min)) {
  11                 IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
  12                         ni->ni_macaddr, NULL,