[PATCH 3.13 107/259] Bluetooth: Ignore H5 non-link packets in non-active state

From: Kamal Mostafa
Date: Fri Aug 08 2014 - 16:55:41 EST -stable review patch. If anyone has any objections, please let me know.


From: Loic Poulain <loic.poulain@xxxxxxxxx>

commit 48439d501e3d9e8634bdc0c418e066870039599d upstream.

When detecting a non-link packet, h5_reset_rx() frees the Rx skb.
Not returning after that will cause the upcoming h5_rx_payload()
call to dereference a now NULL Rx skb and trigger a kernel oops.

Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxx>
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
drivers/bluetooth/hci_h5.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
index f6f4974..e36a024 100644
--- a/drivers/bluetooth/hci_h5.c
+++ b/drivers/bluetooth/hci_h5.c
@@ -406,6 +406,7 @@ static int h5_rx_3wire_hdr(struct hci_uart *hu, unsigned char c)
BT_ERR("Non-link packet received in non-active state");
+ return 0;

h5->rx_func = h5_rx_payload;

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