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Bluetooth: A2MP: Fix potential NULL dereference

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Return INVALID_CTRL_ID for unknown AMP controller and for BR/EDR
controller and fixes dereference possible NULL pointer.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Andrei Emeltchenko 2012-09-28 14:28:50 +03:00 committed by Gustavo Padovan
parent 9cb23dd4b6
commit bc8dce4f7b
1 changed files with 8 additions and 6 deletions
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14
net/bluetooth/a2mp.c
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@ -278,7 +278,7 @@ static int a2mp_getinfo_req(struct amp_mgr *mgr, struct sk_buff *skb,
BT_DBG("id %d", req->id);
hdev = hci_dev_get(req->id);
if (!hdev) {
if (!hdev || hdev->dev_type != HCI_AMP) {
struct a2mp_info_rsp rsp;
rsp.id = req->id;
@ -286,14 +286,16 @@ static int a2mp_getinfo_req(struct amp_mgr *mgr, struct sk_buff *skb,
a2mp_send(mgr, A2MP_GETINFO_RSP, hdr->ident, sizeof(rsp),
&rsp);
goto done;
}
if (hdev->dev_type != HCI_BREDR) {
mgr->state = READ_LOC_AMP_INFO;
hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL);
}
mgr->state = READ_LOC_AMP_INFO;
hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL);
hci_dev_put(hdev);
done:
if (hdev)
hci_dev_put(hdev);
skb_pull(skb, sizeof(*req));
return 0;