3 files changed, 17 insertions, 2 deletions

diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index 150d66dbda9d..220e83be3ef4 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -380,6 +380,15 @@ void ieee80211_key_free(struct ieee80211_key *key)
         if (!key)
                 return;
 
+        if (!key->sdata) {
+                /* The key has not been linked yet, simply free it
+                 * and don't Oops */
+                if (key->conf.alg == ALG_CCMP)
+                        ieee80211_aes_key_free(key->u.ccmp.tfm);
+                kfree(key);
+                return;
+        }
+
         spin_lock_irqsave(&key->sdata->local->key_lock, flags);
         __ieee80211_key_free(key);
         spin_unlock_irqrestore(&key->sdata->local->key_lock, flags);
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
index 6106cb79060c..e8404212ad57 100644
--- a/net/mac80211/wext.c
+++ b/net/mac80211/wext.c
@@ -95,6 +95,13 @@ static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr,
                         }
                 }
 
+                if (alg == ALG_WEP &&
+                        key_len != LEN_WEP40 && key_len != LEN_WEP104) {
+                        ieee80211_key_free(key);
+                        err = -EINVAL;
+                        goto out_unlock;
+                }
+
                 ieee80211_key_link(key, sdata, sta);
 
                 if (set_tx_key || (!sta && !sdata->default_key && key))
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 635b996c8c35..5d09e8698b57 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -323,8 +323,7 @@ static void wme_qdiscop_destroy(struct Qdisc* qd)
         struct ieee80211_hw *hw = &local->hw;
         int queue;
 
-        tcf_destroy_chain(q->filter_list);
-        q->filter_list = NULL;
+        tcf_destroy_chain(&q->filter_list);
 
         for (queue=0; queue < hw->queues; queue++) {
                 skb_queue_purge(&q->requeued[queue]);