evie/android_kernel_oneplus_msm8998
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qseecom: check invalid handle for app loaded query request

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Check if the handle data type received from userspace is valid
for app loaded query request to avoid the offset boundary check
for qseecom_send_modfd_resp is bypassed.

Change-Id: I5f3611a8f830d6904213781c5ba70cfc0ba3e2e0
Signed-off-by: Zhen Kong <zkong@codeaurora.org>
This commit is contained in:
Zhen Kong 2019-08-27 14:02:35 -07:00
parent 22dc337a69
commit ccc8c4fcf6
1 changed files with 8 additions and 1 deletions
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9
drivers/misc/qseecom.c
View file

@ -1,6 +1,6 @@
/*Qualcomm Secure Execution Environment Communicator (QSEECOM) driver
*
* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
* Copyright (c) 2012-2019, 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
@ -7281,6 +7281,13 @@ long qseecom_ioctl(struct file *file, unsigned cmd, unsigned long arg)
break;
}
case QSEECOM_IOCTL_APP_LOADED_QUERY_REQ: {
if ((data->type != QSEECOM_GENERIC) &&
(data->type != QSEECOM_CLIENT_APP)) {
pr_err("app loaded query req: invalid handle (%d)\n",
data->type);
ret = -EINVAL;
break;
}
data->type = QSEECOM_CLIENT_APP;
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);