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qcacmn: Fix possible buffer overflow in regulatory api

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Check for channel list size before accessing it to avoid
possible buffer overflow

Change-Id: I2cf36adb2651a40d6e186deaef58330d1c0105ca
CRs-Fixed: 2160756
This commit is contained in:
Kiran Kumar Lokere
2018-01-08 19:23:26 -08:00
committed by snandini
parent da18becba6
commit 3550d5a7f6
1 changed files with 3 additions and 1 deletions
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4
umac/regulatory/core/src/reg_services.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2014-2017 The Linux Foundation. All rights reserved.
* Copyright (c) 2014-2018 The Linux Foundation. All rights reserved.
*
* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
*
@@ -3815,6 +3815,8 @@ static QDF_STATUS reg_process_ch_avoid_freq(struct wlan_objmgr_psoc *psoc,
for (ch_loop = 0; ch_loop < psoc_priv_obj->unsafe_chan_list.ch_cnt;
ch_loop++) {
if (ch_loop >= NUM_CHANNELS)
break;
reg_debug("channel %d is not safe",
psoc_priv_obj->unsafe_chan_list.
ch_list[ch_loop]);