[PATCH] xen: fix potential shift out-of-bounds in xenhcd_hub_control()

[Zhang Shurong <zhang_shurong@xxxxxxxxxxx>]

Fix potential shift out-of-bounds in xenhcd_hub_control()
ClearPortFeature handling and SetPortFeature handling.

wValue may be greater than 32 which can not be used for shifting.

similar patch:
https://patchwork.kernel.org/patch/12162547

Signed-off-by: Zhang Shurong <zhang_shurong@xxxxxxxxxxx>
---
 drivers/usb/host/xen-hcd.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/host/xen-hcd.c b/drivers/usb/host/xen-hcd.c
index 46fdab940092..c0e7207d3857 100644
--- a/drivers/usb/host/xen-hcd.c
+++ b/drivers/usb/host/xen-hcd.c
@@ -456,6 +456,8 @@ static int xenhcd_hub_control(struct usb_hcd *hcd, __u16 
typeReq, __u16 wValue,
                        info->ports[wIndex - 1].c_connection = false;
                        fallthrough;
                default:
+                       if (wValue >= 32)
+                               goto error;
                        info->ports[wIndex - 1].status &= ~(1 << wValue);
                        break;
                }
@@ -527,6 +529,8 @@ static int xenhcd_hub_control(struct usb_hcd *hcd, __u16 
typeReq, __u16 wValue,
                        xenhcd_rhport_suspend(info, wIndex);
                        break;
                default:
+                       if (wValue >= 32)
+                               goto error;
                        if (info->ports[wIndex-1].status & USB_PORT_STAT_POWER)
                                info->ports[wIndex-1].status |= (1 << wValue);
                }
-- 
2.41.0