openwrt-xburst/package/madwifi/patches-testing/123-ccmp_checks.patch

--- a/net80211/ieee80211_crypto_ccmp.c
+++ b/net80211/ieee80211_crypto_ccmp.c
@@ -478,6 +478,9 @@
 	uint8_t *mic, *pos;
 	u_int space;
 
+	if (ctx->cc_tfm == NULL)
+		return 0;
+
 	ctx->cc_vap->iv_stats.is_crypto_ccmp++;
 
 	skb = skb0;
@@ -592,6 +595,9 @@
 	uint8_t *pos, *mic;
 	u_int space;
 
+	if (ctx->cc_tfm == NULL)
+		return 0;
+
 	ctx->cc_vap->iv_stats.is_crypto_ccmp++;
 
 	skb = skb0;