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Commit 84181086 authored by Paul Zimmerman's avatar Paul Zimmerman Committed by Greg Kroah-Hartman
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staging: dwc2: validate urb->actual_length for OUT endpoints 



In dwc2_assign_and_init_hc(), validate urb->actual_length for OUT
endpoints before using the value. This fix is from the Synopsys
vendor driver.

Signed-off-by: default avatarPaul Zimmerman <paulz@synopsys.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a4ec93d8

drivers/staging/dwc2/hcd.c

+4 −0
Original line number Diff line number Diff line
@@ -780,6 +780,10 @@ static void dwc2_assign_and_init_hc(struct dwc2_hsotg *hsotg, 
	chan->data_pid_start = qh->data_toggle;

	chan->multi_count = 1;



	if ((urb->actual_length < 0 || urb->actual_length > urb->length) &&

	    !dwc2_hcd_is_pipe_in(&urb->pipe_info))

		urb->actual_length = urb->length;



	if (hsotg->core_params->dma_enable > 0) {

		chan->xfer_dma = urb->dma + urb->actual_length;