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add check for wTotalLength

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sakumisu
2024-04-03 11:27:28 +08:00
parent a6d539792f
commit 5494b0e99a
1 changed files with 6 additions and 0 deletions
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6
core/usbh_core.c
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@@ -515,6 +515,12 @@ int usbh_enumerate(struct usbh_hubport *hport)
/* Read the full size of the configuration data */
uint16_t wTotalLength = ((struct usb_configuration_descriptor *)ep0_request_buffer[hport->bus->busid])->wTotalLength;
if (wTotalLength > CONFIG_USBHOST_REQUEST_BUFFER_LEN) {
ret = -USB_ERR_NOMEM;
USB_LOG_ERR("wTotalLength %d is overflow, default is %d\r\n", wTotalLength, CONFIG_USBHOST_REQUEST_BUFFER_LEN);
goto errout;
}
setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_STANDARD | USB_REQUEST_RECIPIENT_DEVICE;
setup->bRequest = USB_REQUEST_GET_DESCRIPTOR;
setup->wValue = (uint16_t)((USB_DESCRIPTOR_TYPE_CONFIGURATION << 8) | 0);