Bluetooth: Fix missing check for FIPS security level

When checking whether a legacy link key provides at least HIGH security
level we also need to check for FIPS level which is one step above HIGH.
This patch fixes a missing check in the hci_link_key_request_evt()
function.
Signed-off-by: NJohan Hedberg <johan.hedberg@intel.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org

net/bluetooth/hci_event.c

@@ -3077,7 +3077,8 @@ static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		}
 
 		if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
-		    conn->pending_sec_level == BT_SECURITY_HIGH) {
+		    (conn->pending_sec_level == BT_SECURITY_HIGH ||
+		     conn->pending_sec_level == BT_SECURITY_FIPS)) {
 			BT_DBG("%s ignoring key unauthenticated for high security",
 			       hdev->name);
 			goto not_found;