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Commit 24b18967 authored by Rahul Sharma's avatar Rahul Sharma Committed by Nirmal Abraham
Browse files

drm/msm/hdmi-staging: Fix Buffer Overflow 



This change is done to check the size of input before doing the
buffer copy.

Change-Id: I01f8b1f3c3b6e920f186f5f90ea9707bb25bcbbc
Signed-off-by: default avatarRahul Sharma <rahsha@codeaurora.org>
parent d868378e

drivers/gpu/drm/msm/hdmi-staging/sde_hdmi.c

+7 −2
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016-2017, 2019, The Linux Foundation. All rights reserved.

 * Copyright (C) 2013 Red Hat

 * Author: Rob Clark <robdclark@gmail.com>

 *
@@ -73,7 +73,12 @@ static ssize_t _sde_hdmi_debugfs_dump_info_read(struct file *file, 
	if (!buf)

		return -ENOMEM;



	len += snprintf(buf, SZ_4K, "name = %s\n", display->name);

	len += snprintf(buf, SZ_1K, "name = %s\n", display->name);



	if (len > count) {

		kfree(buf);

		return -ENOMEM;

	}



	if (copy_to_user(buff, buf, len)) {

		kfree(buf);