linux-kernel - [PATCH 4.14 21/42] usb: gadget: f_hid: idle uses the highest byte for duration

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210813150525.811197546@linuxfoundation.org>
Date:   Fri, 13 Aug 2021 17:06:47 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Maxim Devaev <mdevaev@...il.com>
Subject: [PATCH 4.14 21/42] usb: gadget: f_hid: idle uses the highest byte for duration

From: Maxim Devaev <mdevaev@...il.com>

commit fa20bada3f934e3b3e4af4c77e5b518cd5a282e5 upstream.

SET_IDLE value must be shifted 8 bits to the right to get duration.
This confirmed by USBCV test.

Fixes: afcff6dc690e ("usb: gadget: f_hid: added GET_IDLE and SET_IDLE handlers")
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Maxim Devaev <mdevaev@...il.com>
Link: https://lore.kernel.org/r/20210727185800.43796-1-mdevaev@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/usb/gadget/function/f_hid.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -583,7 +583,7 @@ static int hidg_setup(struct usb_functio
 		  | HID_REQ_SET_IDLE):
 		VDBG(cdev, "set_idle\n");
 		length = 0;
-		hidg->idle = value;
+		hidg->idle = value >> 8;
 		goto respond;
 		break;