diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index dc79a362aef7..7ce4ae5a6ba1 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -4953,9 +4953,11 @@ static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
 
 	BT_DBG("%s", hdev->name);
 
+	hci_dev_lock(hdev);
+
 	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
 	if (!conn)
-		return;
+		goto unlock;
 
 	conn->passkey_notify = __le32_to_cpu(ev->passkey);
 	conn->passkey_entered = 0;
@@ -4964,6 +4966,9 @@ static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
 		mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
 					 conn->dst_type, conn->passkey_notify,
 					 conn->passkey_entered);
+
+unlock:
+	hci_dev_unlock(hdev);
 }
 
 static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
@@ -4973,14 +4978,16 @@ static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("%s", hdev->name);
 
+	hci_dev_lock(hdev);
+
 	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
 	if (!conn)
-		return;
+		goto unlock;
 
 	switch (ev->type) {
 	case HCI_KEYPRESS_STARTED:
 		conn->passkey_entered = 0;
-		return;
+		goto unlock;
 
 	case HCI_KEYPRESS_ENTERED:
 		conn->passkey_entered++;
@@ -4995,13 +5002,16 @@ static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		break;
 
 	case HCI_KEYPRESS_COMPLETED:
-		return;
+		goto unlock;
 	}
 
 	if (hci_dev_test_flag(hdev, HCI_MGMT))
 		mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
 					 conn->dst_type, conn->passkey_notify,
 					 conn->passkey_entered);
+
+unlock:
+	hci_dev_unlock(hdev);
 }
 
 static void hci_simple_pair_complete_evt(struct hci_dev *hdev,