usbip: vhci_hcd fix shift out-of-bounds in vhci_hub_control()

commit 1cc5ed25bdade86de2650a82b2730108a76de20c upstream.

Fix shift out-of-bounds in vhci_hub_control() SetPortFeature handling.

UBSAN: shift-out-of-bounds in drivers/usb/usbip/vhci_hcd.c:605:42
shift exponent 768 is too large for 32-bit type 'int'

Reported-by: syzbot+3dea30b047f41084de66@syzkaller.appspotmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210324230654.34798-1-skhan@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index 0909cfcbf720557ca50cce70a382f1669de6a26d..32a4dfeea06afe165a26ea0073c4ba6bc18edbec 100644 (file)
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -594,6 +594,8 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                                pr_err("invalid port number %d\n", wIndex);
                                goto error;
                        }
+                       if (wValue >= 32)
+                               goto error;
                        if (hcd->speed == HCD_USB3) {
                                if ((vhci_hcd->port_status[rhport] &
                                     USB_SS_PORT_STAT_POWER) != 0) {