diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 6e049497..884b208 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -848,8 +848,7 @@
 int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb)
 {
 	struct hci_conn *hcon = conn->hcon;
-	__u8 code = skb->data[0];
-	__u8 reason;
+	__u8 code, reason;
 	int err = 0;
 
 	if (hcon->type != LE_LINK) {
@@ -857,12 +856,18 @@
 		return -ENOTSUPP;
 	}
 
+	if (skb->len < 1) {
+		kfree_skb(skb);
+		return -EILSEQ;
+	}
+
 	if (!test_bit(HCI_LE_ENABLED, &conn->hcon->hdev->dev_flags)) {
 		err = -ENOTSUPP;
 		reason = SMP_PAIRING_NOTSUPP;
 		goto done;
 	}
 
+	code = skb->data[0];
 	skb_pull(skb, sizeof(code));
 
 	/*