From: "Gustavo F. Padovan" <padovan@profusion.mobi>
To: linux-bluetooth@vger.kernel.org
Cc: jprvita@profusion.mobi, gustavo@padovan.org, marcel@holtmann.org
Subject: [PATCH 04/11] Bluetooth: Check skb_clone return to avoid NULL dereference
Date: Mon, 31 May 2010 16:05:20 -0300 [thread overview]
Message-ID: <1275332727-16263-4-git-send-email-padovan@profusion.mobi> (raw)
In-Reply-To: <1275332727-16263-3-git-send-email-padovan@profusion.mobi>
skb can be NULL and a Ooops can happen if we do not check for NULL.
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
---
net/bluetooth/l2cap.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index b08731d..27e69f6 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -1335,6 +1335,8 @@ static int l2cap_streaming_send(struct sock *sk)
while ((skb = sk->sk_send_head)) {
tx_skb = skb_clone(skb, GFP_ATOMIC);
+ if (!tx_skb)
+ break;
control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
control |= pi->next_tx_seq << L2CAP_CTRL_TXSEQ_SHIFT;
@@ -1420,6 +1422,8 @@ static int l2cap_ertm_send(struct sock *sk)
}
tx_skb = skb_clone(skb, GFP_ATOMIC);
+ if (!tx_skb)
+ break;
bt_cb(skb)->retries++;
--
1.6.4.4
next prev parent reply other threads:[~2010-05-31 19:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-31 19:05 [PATCH 01/11] Bluetooth: Remove max_tx and tx_window modules paramenter from L2CAP Gustavo F. Padovan
2010-05-31 19:05 ` [PATCH 02/11] Bluetooth: Remove L2CAP Extended Features from Kconfig Gustavo F. Padovan
2010-05-31 19:05 ` [PATCH 03/11] Bluetooth: Fix drop of packets with invalid req_seq/tx_seq Gustavo F. Padovan
2010-05-31 19:05 ` Gustavo F. Padovan [this message]
2010-05-31 19:05 ` [PATCH 05/11] Bluetooth: Fix ERTM vars increment Gustavo F. Padovan
2010-05-31 19:05 ` [PATCH 06/11] Bluetooth: Check packet FCS earlier Gustavo F. Padovan
2010-05-31 19:05 ` [PATCH 07/11] Bluetooth: Only check SAR bits if frame is I-frame Gustavo F. Padovan
2010-05-31 19:05 ` [PATCH 08/11] Bluetooth: Stop ack_timer if ERTM enters in Local Busy or SREJ_SENT Gustavo F. Padovan
2010-05-31 19:05 ` [PATCH 09/11] Bluetooth: Fix ERTM channel shutdown Gustavo F. Padovan
2010-05-31 19:05 ` [PATCH 10/11] Bluetooth: Fix crash when sending frames after connection is closed Gustavo F. Padovan
2010-05-31 19:05 ` [PATCH 11/11] Bluetooth: Fix handle of received P-bit Gustavo F. Padovan
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