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42 lines
1.6 KiB
Diff
42 lines
1.6 KiB
Diff
From 6a16567622ff6ccc2a23bd8884b0781995a481b1 Mon Sep 17 00:00:00 2001
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From: Srinivas Girigowda <sgirigow@codeaurora.org>
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Date: Thu, 3 Aug 2017 16:59:51 -0700
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Subject: [PATCH] qcacld-2.0: Fix kernel memory corruption
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Buffer overflow in ConvertQosMapsetFrame function
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when num_dscp_exceptions value is less than 16.
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Fix is to return from function if num_dscp_exceptions
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is less than 16.
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Change-Id: I2fcce60b7fe5e988348cee786e9a4d493d9512fe
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CRs-Fixed: 2061544
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Bug: 36895857
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Signed-off-by: Srinivas Girigowda <sgirigow@codeaurora.org>
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---
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.../staging/qcacld-2.0/CORE/SYS/legacy/src/utils/src/utilsParser.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/drivers/staging/qcacld-2.0/CORE/SYS/legacy/src/utils/src/utilsParser.c b/drivers/staging/qcacld-2.0/CORE/SYS/legacy/src/utils/src/utilsParser.c
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index 6c9993935b481..887e33ada81ae 100644
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--- a/drivers/staging/qcacld-2.0/CORE/SYS/legacy/src/utils/src/utilsParser.c
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+++ b/drivers/staging/qcacld-2.0/CORE/SYS/legacy/src/utils/src/utilsParser.c
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@@ -1,5 +1,5 @@
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/*
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- * Copyright (c) 2011-2015 The Linux Foundation. All rights reserved.
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+ * Copyright (c) 2011-2015, 2017 The Linux Foundation. All rights reserved.
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*
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* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
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*
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@@ -706,6 +706,10 @@ void ConvertQosMapsetFrame(tpAniSirGlobal pMac, tSirQosMapSet* Qos, tDot11fIEQos
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tANI_U8 i,j=0;
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if (dot11fIE->num_dscp_exceptions > 58)
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dot11fIE->num_dscp_exceptions = 58;
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+
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+ if (dot11fIE->num_dscp_exceptions < 16)
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+ return;
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+
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Qos->num_dscp_exceptions = (dot11fIE->num_dscp_exceptions - 16)/2;
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for (i = 0; i < Qos->num_dscp_exceptions; i++)
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{
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