Merge pull request #224 from solokeys/fault_tolerance

limit length of wLength
solokeys · Jul 27, 2019 · 9ead11d · 9ead11d
2 parents 235785b + 303c429
commit 9ead11d
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/targets/stm32l432/lib/usbd/usbd_hid.c b/targets/stm32l432/lib/usbd/usbd_hid.c
@@ -342,6 +342,7 @@ static uint8_t  USBD_HID_Setup (USBD_HandleTypeDef *pdev,
   uint8_t *pbuf = NULL;
   uint16_t status_info = 0U;
   USBD_StatusTypeDef ret = USBD_OK;
+  req->wLength = req->wLength & 0x7f;
 
   switch (req->bmRequest & USB_REQ_TYPE_MASK)
   {
@@ -386,6 +387,7 @@ static uint8_t  USBD_HID_Setup (USBD_HandleTypeDef *pdev,
       break;
 
     case USB_REQ_GET_DESCRIPTOR:
+      req->wLength = req->wLength & 0x7f;
       if(req->wValue >> 8 == HID_REPORT_DESC)
       {
         len = MIN(HID_FIDO_REPORT_DESC_SIZE , req->wLength);