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Commit 56777c54 authored by Dan Carpenter's avatar Dan Carpenter Committed by Greg Kroah-Hartman
Browse files

xhci: xhci-mem: off by one in xhci_stream_id_to_ring() 



commit 313db3d6488bb03b61b99de9dbca061f1fd838e1 upstream.

The > should be >= here so that we don't read one element beyond the end
of the ep->stream_info->stream_rings[] array.

Fixes: e9df17eb ("USB: xhci: Correct assumptions about number of rings per endpoint.")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b85c88f5

drivers/usb/host/xhci-mem.c

+1 −1
Original line number Diff line number Diff line
@@ -638,7 +638,7 @@ struct xhci_ring *xhci_stream_id_to_ring( 
	if (!ep->stream_info)

		return NULL;



	if (stream_id > ep->stream_info->num_streams)

	if (stream_id >= ep->stream_info->num_streams)

		return NULL;

	return ep->stream_info->stream_rings[stream_id];

}