mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-22 06:04:57 -05:00
33 lines
1.2 KiB
Diff
33 lines
1.2 KiB
Diff
From 4b9ae9048d63ef9fe9f8cc9d0e33cc38148b268d Mon Sep 17 00:00:00 2001
|
|
From: Ariel Yin <ayin@google.com>
|
|
Date: Wed, 12 Oct 2016 14:02:14 -0700
|
|
Subject: [PATCH] input: synaptics_dsx: add checks of user input data for image
|
|
name
|
|
|
|
Add checks of the user input count to avoid possible heap overflow
|
|
|
|
Signed-off-by: Min Chong <mchong@google.com>
|
|
Change-Id: I1d50a103a0abcbff5eb6bf204607170e9278dec3
|
|
Bug: 31913197
|
|
---
|
|
drivers/input/touchscreen/synaptics_dsx/synaptics_dsx_fw_update.c | 6 ++++++
|
|
1 file changed, 6 insertions(+)
|
|
|
|
diff --git a/drivers/input/touchscreen/synaptics_dsx/synaptics_dsx_fw_update.c b/drivers/input/touchscreen/synaptics_dsx/synaptics_dsx_fw_update.c
|
|
index 282e06d9aabaa..1f7409efb1565 100644
|
|
--- a/drivers/input/touchscreen/synaptics_dsx/synaptics_dsx_fw_update.c
|
|
+++ b/drivers/input/touchscreen/synaptics_dsx/synaptics_dsx_fw_update.c
|
|
@@ -1767,6 +1767,12 @@ static ssize_t fwu_sysfs_image_name_store(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
ssize_t retval;
|
|
+ if (!buf || count > MAX_IMAGE_NAME_LEN) {
|
|
+ dev_err(fwu->rmi4_data->pdev->dev.parent,
|
|
+ "%s: Failed to copy image file name\n",
|
|
+ __func__);
|
|
+ return -EINVAL;
|
|
+ }
|
|
|
|
if (!mutex_trylock(&dsx_fwu_sysfs_mutex))
|
|
return -EBUSY;
|