From: Shuah Khan <skhan@linuxfoundation.org>
To: valentina.manea.m@gmail.com, shuah@kernel.org,
gregkh@linuxfoundation.org
Cc: Shuah Khan <skhan@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
syzbot+3dea30b047f41084de66@syzkaller.appspotmail.com,
stable@vger.kernel.org
Subject: [PATCH] usbip: vhci_hcd fix shift out-of-bounds in vhci_hub_control()
Date: Wed, 24 Mar 2021 17:06:54 -0600 [thread overview]
Message-ID: <20210324230654.34798-1-skhan@linuxfoundation.org> (raw)
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>
---
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) {
--
2.27.0
reply other threads:[~2021-03-24 23:07 UTC|newest]
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