3.16.46-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold <johan@xxxxxxxxxx> commit 68c32f9c2a36d410aa242e661506e5b2c2764179 upstream. Make sure to check the number of endpoints to avoid dereferencing a NULL-pointer should a malicious device lack endpoints. Fixes: cf7776dc05b8 ("[PATCH] isdn4linux: Siemens Gigaset drivers - direct USB connection") Cc: Hansjoerg Lipp <hjlipp@xxxxxx> Signed-off-by: Johan Hovold <johan@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx> --- drivers/isdn/gigaset/bas-gigaset.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/isdn/gigaset/bas-gigaset.c +++ b/drivers/isdn/gigaset/bas-gigaset.c @@ -2317,6 +2317,9 @@ static int gigaset_probe(struct usb_inte return -ENODEV; } + if (hostif->desc.bNumEndpoints < 1) + return -ENODEV; + dev_info(&udev->dev, "%s: Device matched (Vendor: 0x%x, Product: 0x%x)\n", __func__, le16_to_cpu(udev->descriptor.idVendor),