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authorMarcel Holtmann <marcel@holtmann.org>2015-10-09 17:13:50 +0300
committerMarcel Holtmann <marcel@holtmann.org>2015-10-21 01:49:21 +0300
commitbb77543ebd2e38c08412fec7eb1e35b902c5ff77 (patch)
treea46858968a104b007ae9bc8ddbd280ad0088100a /net/bluetooth/hci_sock.c
parent8cd4f581427213e086fca601bb9d8c7ea9cfeabc (diff)
downloadlinux-bb77543ebd2e38c08412fec7eb1e35b902c5ff77.tar.xz
Bluetooth: Restrict valid packet types via HCI_CHANNEL_RAW
When using the HCI_CHANNEL_RAW, restrict the packet types to valid ones from the Bluetooth specification. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Diffstat (limited to 'net/bluetooth/hci_sock.c')
-rw-r--r--net/bluetooth/hci_sock.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index bad86dfe134f..1f4665a124f6 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -170,6 +170,11 @@ void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb)
continue;
if (hci_pi(sk)->channel == HCI_CHANNEL_RAW) {
+ if (bt_cb(skb)->pkt_type != HCI_COMMAND_PKT &&
+ bt_cb(skb)->pkt_type != HCI_EVENT_PKT &&
+ bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT &&
+ bt_cb(skb)->pkt_type != HCI_SCODATA_PKT)
+ continue;
if (is_filtered_packet(sk, skb))
continue;
} else if (hci_pi(sk)->channel == HCI_CHANNEL_USER) {
@@ -1247,6 +1252,12 @@ static int hci_sock_sendmsg(struct socket *sock, struct msghdr *msg,
goto drop;
}
+ if (bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT &&
+ bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) {
+ err = -EINVAL;
+ goto drop;
+ }
+
skb_queue_tail(&hdev->raw_q, skb);
queue_work(hdev->workqueue, &hdev->tx_work);
}