diff options
| author | Johan Hedberg <johan.hedberg@intel.com> | 2014-07-14 14:34:55 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2014-07-14 13:37:10 +0200 |
| commit | b2d5e254ebfe9e4a926265c23bc5943f212fd1ac (patch) | |
| tree | 86718d8d8e72d9e48042221f4452d604ab78118d /net | |
| parent | eb5a4de80f266d0bb7edd43c61894da74faaa91a (diff) | |
Bluetooth: Fix trying LTK re-encryption when we don't have an LTK
In the case that the key distribution bits cause us not to generate a
local LTK we should not try to re-encrypt if we're currently encrypted
with an STK. This patch fixes the check for this in the
smp_sufficient_security function.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/smp.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index bf3568c46847..8339d6b0f2b8 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -876,9 +876,12 @@ bool smp_sufficient_security(struct hci_conn *hcon, u8 sec_level) /* If we're encrypted with an STK always claim insufficient * security. This way we allow the connection to be re-encrypted * with an LTK, even if the LTK provides the same level of - * security. + * security. Only exception is if we don't have an LTK (e.g. + * because of key distribution bits). */ - if (test_bit(HCI_CONN_STK_ENCRYPT, &hcon->flags)) + if (test_bit(HCI_CONN_STK_ENCRYPT, &hcon->flags) && + hci_find_ltk_by_addr(hcon->hdev, &hcon->dst, hcon->dst_type, + hcon->out)) return false; if (hcon->sec_level >= sec_level) |