Commit 1cc5ed25 authored by Shuah Khan's avatar Shuah Khan Committed by Greg Kroah-Hartman
Browse files

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



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: default avatar <syzbot+3dea30b047f41084de66@syzkaller.appspotmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarShuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210324230654.34798-1-skhan@linuxfoundation.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0bd86049

drivers/usb/usbip/vhci_hcd.c

+2 −0
Original line number Diff line number Diff line
@@ -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) {