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    Subject[PATCH 3.15 059/122] Bluetooth: Fix setting correct authentication information for SMP STK
    Date
    3.15-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Johan Hedberg <johan.hedberg@intel.com>

    commit fff3490f47810e2d34b91fb9e31103e923b11c2f upstream.

    When we store the STK in slave role we should set the correct
    authentication information for it. If the pairing is producing a HIGH
    security level the STK is considered authenticated, and otherwise it's
    considered unauthenticated. This patch fixes the value passed to the
    hci_add_ltk() function when adding the STK on the slave side.

    Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
    Tested-by: Marcin Kraglak <marcin.kraglak@tieto.com>
    Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    net/bluetooth/smp.c | 9 +++++++--
    1 file changed, 7 insertions(+), 2 deletions(-)

    --- a/net/bluetooth/smp.c
    +++ b/net/bluetooth/smp.c
    @@ -533,7 +533,7 @@ static void random_work(struct work_stru
    hci_le_start_enc(hcon, ediv, rand, stk);
    hcon->enc_key_size = smp->enc_key_size;
    } else {
    - u8 stk[16];
    + u8 stk[16], auth;
    __le64 rand = 0;
    __le16 ediv = 0;

    @@ -545,8 +545,13 @@ static void random_work(struct work_stru
    memset(stk + smp->enc_key_size, 0,
    SMP_MAX_ENC_KEY_SIZE - smp->enc_key_size);

    + if (hcon->pending_sec_level == BT_SECURITY_HIGH)
    + auth = 1;
    + else
    + auth = 0;
    +
    hci_add_ltk(hcon->hdev, &hcon->dst, hcon->dst_type,
    - HCI_SMP_STK_SLAVE, 0, stk, smp->enc_key_size,
    + HCI_SMP_STK_SLAVE, auth, stk, smp->enc_key_size,
    ediv, rand);
    }




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