Hi Andrei,
> > > Remove unneeded skb_pull and correct packet length calculation
> > > removing magic number.
> > > ---
> > > net/bluetooth/hci_event.c | 5 ++---
> > > 1 files changed, 2 insertions(+), 3 deletions(-)
> > >
> > > diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
> > > index cfccf7e..21c1bf0 100644
> > > --- a/net/bluetooth/hci_event.c
> > > +++ b/net/bluetooth/hci_event.c
> > > @@ -2268,8 +2268,6 @@ static inline void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *s
> > > struct hci_ev_num_comp_pkts *ev = (void *) skb->data;
> > > int i;
> > >
> > > - skb_pull(skb, sizeof(*ev));
> > > -
> > > BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl);
> > >
> > > if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
> > > @@ -2277,7 +2275,8 @@ static inline void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *s
> > > return;
> > > }
> > >
> > > - if (skb->len < ev->num_hndl * 4) {
> > > + if (skb->len < ev->num_hndl * sizeof(struct hci_comp_pkts_info) +
> > > + sizeof(*ev)) {
> > > BT_DBG("%s bad parameters", hdev->name);
> > > return;
> > > }
> >
> > actually this check is not enough. You need to make this two-fold.
> >
> > if (skb->len < sizeof(*ev)) {
>
> maybe:
>
> if (skb->len < sizeof(*ev) || (...))
> return;
that will work as well.
Regards
Marcel
--
To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
