diff options
Diffstat (limited to 'drivers/usb/misc')
| -rw-r--r-- | drivers/usb/misc/usbtest.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index d6fcbc477fc5..b4152820d655 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -657,6 +657,25 @@ static int is_good_ss_cap(struct usbtest_dev *tdev, u8 *buf) return 1; } +static int is_good_con_id(struct usbtest_dev *tdev, u8 *buf) +{ + struct usb_ss_container_id_descriptor *con_id; + + con_id = (struct usb_ss_container_id_descriptor *) buf; + + if (con_id->bLength != USB_DT_USB_SS_CONTN_ID_SIZE) { + ERROR(tdev, "bogus container id descriptor length\n"); + return 0; + } + + if (con_id->bReserved) { /* reserved == 0 */ + ERROR(tdev, "reserved bits set\n"); + return 0; + } + + return 1; +} + /* sanity test for standard requests working with usb_control_mesg() and some * of the utility functions which use it. * @@ -810,6 +829,14 @@ static int ch9_postconfig(struct usbtest_dev *dev) return -EDOM; } break; + case CONTAINER_ID_TYPE: + if (buf + USB_DT_USB_SS_CONTN_ID_SIZE > + dev->buf + total || + !is_good_con_id(dev, buf)) { + dev_err(&iface->dev, "bogus container id descriptor\n"); + return -EDOM; + } + break; default: break; } |