Bluetooth: Don't modify sec_level if auth failed

If authentication fails the security level should stay as it was set
before the process has started. Setting BT_SECURITY_LOW can hide real
security level on a link eg. having BT_SECURITY_MEDIUM on the link,
re-authenticate with failure to get BT_SECURITY_HIGH, as  a result we
get BT_SECURITY_LOW on the link while the real security is still medium.

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

1 files changed, 0 insertions, 1 deletions

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index fbbb63f8a897..35f98980070c 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1459,7 +1459,6 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s
                         conn->sec_level = conn->pending_sec_level;
                 } else {
                         mgmt_auth_failed(hdev->id, &conn->dst, ev->status);
-                        conn->sec_level = BT_SECURITY_LOW;
                 }
 
                 clear_bit(HCI_CONN_AUTH_PEND, &conn->pend);