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Bluetooth: check for l2cap header in start fragment

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BLUETOOTH SPECIFICATION Version 4.0 [Vol 3] page 36 mentioned
"Note: Start Fragments always begin with the Basic L2CAP header
of a PDU."

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Andrei Emeltchenko 2010-09-15 14:28:43 +03:00 committed by Gustavo F. Padovan
parent 8979481328
commit aae7fe22a8
1 changed files with 2 additions and 1 deletions
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3
net/bluetooth/l2cap.c
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@ -4675,7 +4675,8 @@ static int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 fl
l2cap_conn_unreliable(conn, ECOMM);
}
if (skb->len < 2) {
/* Start fragment always begin with Basic L2CAP header */
if (skb->len < L2CAP_HDR_SIZE) {
BT_ERR("Frame is too short (len %d)", skb->len);
l2cap_conn_unreliable(conn, ECOMM);
goto drop;