mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-10-01 01:35:54 -04:00
55 lines
1.5 KiB
Diff
55 lines
1.5 KiB
Diff
From b83b9057d56c057d1dfca79ae197583a83766245 Mon Sep 17 00:00:00 2001
|
|
From: Govind Singh <govinds@codeaurora.org>
|
|
Date: Thu, 12 Jan 2017 10:30:25 +0530
|
|
Subject: qcacld-2.0: Do not copy buffer to user-space if diag read fails
|
|
|
|
ATH diag procfs read is copying read_buffer to user space
|
|
unconditionally, causing kernel heap information leak of
|
|
uninitialized read_buffer if hif diag read fails.
|
|
|
|
Do not copy buffer to user space if diag read fails to
|
|
avoid information leak to user space.
|
|
|
|
Change-Id: I5e07cad4f90e5e9b3c461268b8fa3635c3128b9f
|
|
CRs-Fixed: 1104731
|
|
---
|
|
CORE/SERVICES/HIF/ath_procfs.c | 11 +++++------
|
|
1 file changed, 5 insertions(+), 6 deletions(-)
|
|
|
|
diff --git a/CORE/SERVICES/HIF/ath_procfs.c b/CORE/SERVICES/HIF/ath_procfs.c
|
|
index cfdf97a..d1a34dd 100644
|
|
--- a/CORE/SERVICES/HIF/ath_procfs.c
|
|
+++ b/CORE/SERVICES/HIF/ath_procfs.c
|
|
@@ -1,5 +1,5 @@
|
|
/*
|
|
- * Copyright (c) 2013, 2016 The Linux Foundation. All rights reserved.
|
|
+ * Copyright (c) 2013, 2016-2017 The Linux Foundation. All rights reserved.
|
|
*
|
|
* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
|
|
*
|
|
@@ -113,17 +113,16 @@ static ssize_t ath_procfs_diag_read(struct file *file, char __user *buf,
|
|
(A_UINT8 *)read_buffer, count);
|
|
}
|
|
|
|
+ if (rv)
|
|
+ return -EIO;
|
|
+
|
|
if(copy_to_user(buf, read_buffer, count)) {
|
|
vos_mem_free(read_buffer);
|
|
return -EFAULT;
|
|
} else
|
|
vos_mem_free(read_buffer);
|
|
|
|
- if (rv == 0) {
|
|
- return count;
|
|
- } else {
|
|
- return -EIO;
|
|
- }
|
|
+ return count;
|
|
}
|
|
|
|
static ssize_t ath_procfs_diag_write(struct file *file, const char __user *buf,
|
|
--
|
|
cgit v1.1
|
|
|