This is a note to let you know that I've just added the patch titled
Bluetooth: Fix security level for peripheral role
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-fix-security-level-for-peripheral-role.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f8776218e8546397be64ad2bc0ebf4748522d6e3 Mon Sep 17 00:00:00 2001
From: Andre Guedes <andre.guedes@xxxxxxxxxxxxx>
Date: Wed, 31 Jul 2013 16:25:28 -0300
Subject: Bluetooth: Fix security level for peripheral role
From: Andre Guedes <andre.guedes@xxxxxxxxxxxxx>
commit f8776218e8546397be64ad2bc0ebf4748522d6e3 upstream.
While playing the peripheral role, the host gets a LE Long Term Key
Request Event from the controller when a connection is established
with a bonded device. The host then informs the LTK which should be
used for the connection. Once the link is encrypted, the host gets
an Encryption Change Event.
Therefore we should set conn->pending_sec_level instead of conn->
sec_level in hci_le_ltk_request_evt. This way, conn->sec_level is
properly updated in hci_encrypt_change_evt.
Moreover, since we have a LTK associated to the device, we have at
least BT_SECURITY_MEDIUM security level.
Signed-off-by: Andre Guedes <andre.guedes@xxxxxxxxxxxxx>
Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/bluetooth/hci_event.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -3375,7 +3375,9 @@ static inline void hci_le_ltk_request_ev
cp.handle = cpu_to_le16(conn->handle);
if (ltk->authenticated)
- conn->sec_level = BT_SECURITY_HIGH;
+ conn->pending_sec_level = BT_SECURITY_HIGH;
+ else
+ conn->pending_sec_level = BT_SECURITY_MEDIUM;
hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
Patches currently in stable-queue which might be from andre.guedes@xxxxxxxxxxxxx are
queue-3.4/bluetooth-fix-security-level-for-peripheral-role.patch
queue-3.4/bluetooth-fix-encryption-key-size-for-peripheral-role.patch
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