1 files changed, 4 insertions, 3 deletions

diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 4f9662d0fd81..3d1cc164557d 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -909,10 +909,11 @@ int smp_conn_security(struct hci_conn *hcon, __u8 sec_level)
 
         authreq = seclevel_to_authreq(sec_level);
 
-        /* hcon->auth_type is set by pair_device in mgmt.c. If the MITM
-         * flag is set we should also set it for the SMP request.
+        /* Require MITM if IO Capability allows or the security level
+         * requires it.
          */
-        if ((hcon->auth_type & 0x01))
+        if (hcon->io_capability != HCI_IO_NO_INPUT_OUTPUT ||
+            sec_level > BT_SECURITY_MEDIUM)
                 authreq |= SMP_AUTH_MITM;
 
         if (hcon->link_mode & HCI_LM_MASTER) {