[BLUETOOTH]: Fix unaligned access in hci_send_to_sock.

The "u16 *" derefs of skb->data need to be wrapped inside of
a get_unaligned().

Thanks to Gustavo Zacarias for the bug report.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 4 deletions

diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index f26a9eb49945..711a085eca5b 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -120,10 +120,13 @@ void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb)
                         if (!hci_test_bit(evt, &flt->event_mask))
                                 continue;
 
-                        if (flt->opcode && ((evt == HCI_EV_CMD_COMPLETE && 
-                                        flt->opcode != *(__u16 *)(skb->data + 3)) ||
-                                        (evt == HCI_EV_CMD_STATUS && 
-                                        flt->opcode != *(__u16 *)(skb->data + 4))))
+                        if (flt->opcode &&
+                            ((evt == HCI_EV_CMD_COMPLETE &&
+                              flt->opcode !=
+                              get_unaligned((__u16 *)(skb->data + 3))) ||
+                             (evt == HCI_EV_CMD_STATUS &&
+                              flt->opcode !=
+                              get_unaligned((__u16 *)(skb->data + 4)))))
                                 continue;
                 }