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

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@vger.kernel.org Signed-off-by: Johan Hovold johan@kernel.org

---

drivers/bluetooth/bfusb.c | 2 ++ 1 file changed, 2 insertions(+)

patch has been applied to bluetooth-next tree.

Regards

Marcel