From 1cc5ed25bdade86de2650a82b2730108a76de20c Mon Sep 17 00:00:00 2001
From: Shuah Khan <skhan@linuxfoundation.org>
Date: Wed, 24 Mar 2021 17:06:54 -0600
Subject: [PATCH] usbip: vhci_hcd fix shift out-of-bounds in vhci_hub_control()
Git-commit: 1cc5ed25bdade86de2650a82b2730108a76de20c
Patch-mainline: v5.12-rc6
References: git-fixes

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>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/usb/usbip/vhci_hcd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index 3209b5ddd30c..a20a8380ca0c 100644
--- 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) {
-- 
2.26.2