Re: [PATCH] Bluetooth: SMP: Workaround Microsoft Surface Precision Mouse bug

Hi Szymon,

Microsoft Surface Precision Mouse provides bogus identity address when pairing. It connects with Static Random address but provides Public Address in SMP Identity Address Information PDU. Address has same value but type is different. Workaround this by dropping IRK if ID address discrepancy is detected.

...

HCI Event: LE Meta Event (0x3e) plen 19

 LE Connection Complete (0x01)
   Status: Success (0x00)
   Handle: 75
   Role: Master (0x00)
   Peer address type: Random (0x01)
   Peer address: E0:52:33:93:3B:21 (Static)
   Connection interval: 50.00 msec (0x0028)
   Connection latency: 0 (0x0000)
   Supervision timeout: 420 msec (0x002a)
   Master clock accuracy: 0x00

....

...

ACL Data RX: Handle 75 flags 0x02 dlen 12

 SMP: Identity Address Information (0x09) len 7
   Address type: Public (0x00)
   Address: E0:52:33:93:3B:21

Signed-off-by: Szymon Janc szymon.janc@codecoup.pl Tested-by: Maarten Fonville maarten.fonville@gmail.com Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199461 Cc: stable@vger.kernel.org

---

net/bluetooth/smp.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)

patch has been applied to bluetooth-next tree.

Regards

Marcel