mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-30 01:46:30 -05:00
42 lines
1.5 KiB
Diff
42 lines
1.5 KiB
Diff
|
From ab3f46119ca10de87a11fe966b0723c48f27acd4 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org>
|
||
|
|
Date: Wed, 30 Mar 2016 17:12:16 +0530
|
||
|
|
Subject: msm: limits: Check user buffer size before copying to local buffer
|
||
|
|
|
||
|
|
User input data is passed in from userspace through debugfs interface
|
||
|
|
of supply lm core to validate supply lm core functionality. Ensure
|
||
|
|
user buffer size is not greater than expected stack buffer size
|
||
|
|
to avoid out of bounds array accesses.
|
||
|
|
|
||
|
|
Change-Id: I5a93774855241b50895c5e2b3ff939e4c33a0185
|
||
|
|
Signed-off-by: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org>
|
||
|
|
---
|
||
|
|
drivers/thermal/supply_lm_core.c | 7 ++++++-
|
||
|
|
1 file changed, 6 insertions(+), 1 deletion(-)
|
||
|
|
|
||
|
|
diff --git a/drivers/thermal/supply_lm_core.c b/drivers/thermal/supply_lm_core.c
|
||
|
|
index fc8e807..a4d137f 100644
|
||
|
|
--- a/drivers/thermal/supply_lm_core.c
|
||
|
|
+++ b/drivers/thermal/supply_lm_core.c
|
||
|
|
@@ -1,4 +1,4 @@
|
||
|
|
-/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
|
||
|
|
+/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 and
|
||
|
|
@@ -303,6 +303,11 @@ static ssize_t supply_lm_input_write(struct file *fp,
|
||
|
|
enum corner_state gpu;
|
||
|
|
enum corner_state modem;
|
||
|
|
|
||
|
|
+ if (count > (MODE_MAX - 1)) {
|
||
|
|
+ pr_err("Invalid user input\n");
|
||
|
|
+ return -EINVAL;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
if (copy_from_user(&buf, user_buffer, count))
|
||
|
|
return -EFAULT;
|
||
|
|
|
||
|
|
--
|
||
|
|
cgit v1.1
|
||
|
|
|