USB: iowarrior: fix oops with malicious USB descriptors

[pandora-kernel.git] / drivers / usb / misc / iowarrior.c

diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index 8145790..2fce719 100644 (file)
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -792,6 +792,12 @@ static int iowarrior_probe(struct usb_interface *interface,
        iface_desc = interface->cur_altsetting;
        dev->product_id = le16_to_cpu(udev->descriptor.idProduct);
 
+       if (iface_desc->desc.bNumEndpoints < 1) {
+               dev_err(&interface->dev, "Invalid number of endpoints\n");
+               retval = -EINVAL;
+               goto error;
+       }
+
        /* set up the endpoint information */
        for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
                endpoint = &iface_desc->endpoint[i].desc;