diff --git a/[refs] b/[refs]
index e156310b8f6e..6bfec831e503 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6c71bec66ae65305ba5c33c93aa722f21f092737
+refs/heads/master: d92c7f8aabae913de16eb855b19cd2002c341896
diff --git a/trunk/net/caif/chnl_net.c b/trunk/net/caif/chnl_net.c
index 69771c04ba8f..e597733affb8 100644
--- a/trunk/net/caif/chnl_net.c
+++ b/trunk/net/caif/chnl_net.c
@@ -94,6 +94,10 @@ static int chnl_recv_cb(struct cflayer *layr, struct cfpkt *pkt)
 
 	/* check the version of IP */
 	ip_version = skb_header_pointer(skb, 0, 1, &buf);
+	if (!ip_version) {
+		kfree_skb(skb);
+		return -EINVAL;
+	}
 
 	switch (*ip_version >> 4) {
 	case 4: