Commit 79897d20 authored Jun 01, 2014 by Johan Hedberg Committed by Marcel Holtmann May 31, 2014

Bluetooth: Fix requiring SMP MITM for outgoing connections



Due to recent changes to the way that the MITM requirement is set for
outgoing pairing attempts we can no longer rely on the hcon->auth_type
variable (which is actually good since it was formed from BR/EDR
concepts that don't really exist for SMP).

To match the logic that BR/EDR now uses simply rely on the local IO
capability and/or needed security level to set the MITM requirement for
outgoing pairing requests.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org

parent 6a5e8165

net/bluetooth/smp.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -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) {

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