diff options
| author | Gustavo F. Padovan <padovan@profusion.mobi> | 2010-05-01 16:15:37 -0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2010-05-10 09:28:47 +0200 |
| commit | 36f2fd585f43199f006a3b5ff84e95815102cd31 (patch) | |
| tree | 39f854d840c8c450a51d03c32f04ac771671ecbe | |
| parent | 277ffbe362823d18a17792fbd8e507010e666299 (diff) | |
Bluetooth: Check if SDU size is greater than MTU on L2CAP
After reassembly the SDU we need to check his size. It can't overflow
the MTU size.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
| -rw-r--r-- | net/bluetooth/l2cap.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index ac00f5fac2d2..2e354d29f102 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -3277,15 +3277,19 @@ static int l2cap_sar_reassembly_sdu(struct sock *sk, struct sk_buff *skb, u16 co pi->conn_state &= ~L2CAP_CONN_SAR_SDU; pi->partial_sdu_len += skb->len; + if (pi->partial_sdu_len > pi->imtu) + goto drop; + if (pi->partial_sdu_len == pi->sdu_len) { _skb = skb_clone(pi->sdu, GFP_ATOMIC); err = sock_queue_rcv_skb(sk, _skb); if (err < 0) kfree_skb(_skb); } - kfree_skb(pi->sdu); err = 0; +drop: + kfree_skb(pi->sdu); break; } |