mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-12 01:14:22 -05:00
54 lines
1.7 KiB
Diff
54 lines
1.7 KiB
Diff
From ce5d6f84420a2e6ca6aad6b866992970dd313a65 Mon Sep 17 00:00:00 2001
|
|
From: Srinivas Girigowda <sgirigow@codeaurora.org>
|
|
Date: Mon, 12 Dec 2016 18:45:32 -0800
|
|
Subject: qcacld-2.0: Fix array out-of-bounds & integer underflow in
|
|
_iw_set_genie
|
|
|
|
'wrqu->data.length' holds the total number of IE data buffer.
|
|
Add a check to make sure the number of remaining data to be read is
|
|
greater than or equal to IE length.
|
|
|
|
Also, advance the buffer pointer to point to the next element only
|
|
if next element is present.
|
|
|
|
Change-Id: Ic60f3e0650f365955dab4099eb8740e9789e00cc
|
|
CRs-Fixed: 1100132
|
|
---
|
|
CORE/HDD/src/wlan_hdd_wext.c | 12 +++++++++++-
|
|
1 file changed, 11 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/CORE/HDD/src/wlan_hdd_wext.c b/CORE/HDD/src/wlan_hdd_wext.c
|
|
index 0549c3c..574b1ef 100644
|
|
--- a/CORE/HDD/src/wlan_hdd_wext.c
|
|
+++ b/CORE/HDD/src/wlan_hdd_wext.c
|
|
@@ -2755,6 +2755,13 @@ static int __iw_set_genie(struct net_device *dev, struct iw_request_info *info,
|
|
hddLog(VOS_TRACE_LEVEL_INFO, "%s: IE[0x%X], LEN[%d]",
|
|
__func__, elementId, eLen);
|
|
|
|
+ if (remLen < eLen) {
|
|
+ hddLog(LOGE, "Remaining len: %u less than ie len: %u",
|
|
+ remLen, eLen);
|
|
+ ret = -EINVAL;
|
|
+ goto exit;
|
|
+ }
|
|
+
|
|
switch ( elementId )
|
|
{
|
|
case IE_EID_VENDOR:
|
|
@@ -2837,8 +2844,11 @@ static int __iw_set_genie(struct net_device *dev, struct iw_request_info *info,
|
|
hddLog (LOGE, "%s Set UNKNOWN IE %X",__func__, elementId);
|
|
goto exit;
|
|
}
|
|
- genie += eLen;
|
|
remLen -= eLen;
|
|
+
|
|
+ /* Move genie only if next element is present */
|
|
+ if (remLen >= 2)
|
|
+ genie += eLen;
|
|
}
|
|
exit:
|
|
EXIT();
|
|
--
|
|
cgit v1.1
|
|
|