Bluetooth: Fix SMP security level when we have no IO capabilities
When the local IO capability is NoInputNoOutput any attempt to convert
the remote authentication requirement to a target security level is
futile. This patch makes sure that we set the target security level at
most to MEDIUM if the local IO capability is NoInputNoOutput.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index be8371b..a08b077 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -959,7 +959,11 @@
memcpy(&smp->preq[1], req, sizeof(*req));
skb_pull(skb, sizeof(*req));
- sec_level = authreq_to_seclevel(auth);
+ if (conn->hcon->io_capability == 0x03)
+ sec_level = BT_SECURITY_MEDIUM;
+ else
+ sec_level = authreq_to_seclevel(auth);
+
if (sec_level > conn->hcon->pending_sec_level)
conn->hcon->pending_sec_level = sec_level;
@@ -1165,7 +1169,11 @@
auth = rp->auth_req & AUTH_REQ_MASK;
- sec_level = authreq_to_seclevel(auth);
+ if (hcon->io_capability == 0x03)
+ sec_level = BT_SECURITY_MEDIUM;
+ else
+ sec_level = authreq_to_seclevel(auth);
+
if (smp_sufficient_security(hcon, sec_level))
return 0;