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Commit e79ade59 authored by Abir Ghosh's avatar Abir Ghosh
Browse files

qbt_handler: Memset userspace struct to zero 



Explicitly memset struct to zero before sending
to userspace. This is to prevent padded bytes
from possibly leaking kernel memory contents to
userspace.

Change-Id: Id3e873164430c34195344884b2899e61aa060dfc
Signed-off-by: default avatarAbir Ghosh <abirg@codeaurora.org>
parent 0086d774

drivers/soc/qcom/qbt_handler.c

+3 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.

 */



#define DEBUG
@@ -371,6 +371,8 @@ static long qbt_ioctl( 
	{

		struct qbt_wuhb_connected_status wuhb_connected_status;



		memset(&wuhb_connected_status, 0,

				sizeof(wuhb_connected_status));

		wuhb_connected_status.is_wuhb_connected =

				drvdata->is_wuhb_connected;

		rc = copy_to_user((void __user *)priv_arg,