@@ -894,6 +894,7 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
rx->key = key;
return RX_CONTINUE;
} else {
+ u8 keyid;
/*
* The device doesn't give us the IV so we won't be
* able to look up the key. That's ok though, we
@@ -916,7 +917,8 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
* no need to call ieee80211_wep_get_keyidx,
* it verifies a bunch of things we've done already
*/
- keyidx = rx->skb->data[hdrlen + 3] >> 6;
+ skb_copy_bits(rx->skb, hdrlen + 3, &keyid, 1);
+ keyidx = keyid >> 6;
rx->key = rcu_dereference(rx->sdata->keys[keyidx]);
@@ -940,6 +942,8 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
if (skb_linearize(rx->skb))
return RX_DROP_UNUSABLE;
+ hdr = (struct ieee80211_hdr *)skb->data;
+
/* Check for weak IVs if possible */
if (rx->sta && rx->key->conf.alg == ALG_WEP &&
ieee80211_is_data(hdr->frame_control) &&