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Merge pull request #263 from mck1117/fix-msd-lun 

don't deref null pointer on MSD LUN request
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Fabien Poussin 2021-02-24 20:27:49 +01:00 committed by GitHub
parent 5a5c32fd36 1ebdcca467
commit e7cdad3d1a
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1 changed files with 2 additions and 1 deletions
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3
os/hal/src/hal_usb_msd.c
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@ -284,7 +284,8 @@ bool msd_request_hook(USBDriver *usbp) {
} else if (usbp->setup[0] == (USB_RTYPE_TYPE_CLASS | USB_RTYPE_RECIPIENT_INTERFACE | USB_RTYPE_DIR_DEV2HOST)
&& usbp->setup[1] == MSD_REQ_GET_MAX_LUN) {
/* Return the maximum supported LUN. */
usbSetupTransfer(usbp, 0, 1, NULL);
static uint8_t zero = 0;
usbSetupTransfer(usbp, &zero, 1, NULL);
return true;
/* OR */
/* Return false to stall to indicate that we don't support LUN */