Re: [PATCH] Bluetooth: fix division by zero in send path

[Marcel Holtmann]

Hi Johan,

> Add the missing bulk-out endpoint sanity check to probe() to avoid
> division by zero in bfusb_send_frame() in case a malicious device has
> broken descriptors (or when doing descriptor fuzz testing).
> 
> Note that USB core will reject URBs submitted for endpoints with zero
> wMaxPacketSize but that drivers doing packet-size calculations still
> need to handle this (cf. commit 2548288b4fb0 ("USB: Fix: Don't skip
> endpoint descriptors with maxpacket=0")).
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
> ---
> drivers/bluetooth/bfusb.c | 2 ++
> 1 file changed, 2 insertions(+)

patch has been applied to bluetooth-next tree.

Regards

Marcel