diff options
| author | Luiz Augusto von Dentz | 2021-12-01 10:54:56 -0800 |
|---|---|---|
| committer | Marcel Holtmann | 2021-12-07 17:05:50 +0100 |
| commit | 27d9eb4bcac16446ddbbea8860c11720b7afa891 (patch) | |
| tree | 8c56e54a048c7d71f59e98bb3b39e324e5efce41 /net/bluetooth | |
| parent | aadc3d2f42a5bfcec597bfd0d997e3982f740846 (diff) | |
Bluetooth: HCI: Use skb_pull_data to parse Inquiry Result event
This uses skb_pull_data to check the Inquiry Result events received
have the minimum required length.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/hci_event.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index b27a4ad647ca..0bf062f6f262 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -3180,13 +3180,21 @@ unlock: static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb) { + struct hci_ev_inquiry_result *ev; struct inquiry_data data; - struct inquiry_info *info = (void *) (skb->data + 1); - int num_rsp = *((__u8 *) skb->data); + int i; - BT_DBG("%s num_rsp %d", hdev->name, num_rsp); + ev = hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, sizeof(*ev)); + if (!ev) + return; - if (!num_rsp || skb->len < num_rsp * sizeof(*info) + 1) + if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, + flex_array_size(ev, info, ev->num))) + return; + + BT_DBG("%s num %d", hdev->name, ev->num); + + if (!ev->num) return; if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) @@ -3194,7 +3202,8 @@ static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb) hci_dev_lock(hdev); - for (; num_rsp; num_rsp--, info++) { + for (i = 0; i < ev->num; i++) { + struct inquiry_info *info = &ev->info[i]; u32 flags; bacpy(&data.bdaddr, &info->bdaddr); |