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qcacmn: Check chain mask tables number valid

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Chain mask tables number is from wmi service ready ext event, it is
not check valid which will cause oob read arry of chain mask tables.

Change-Id: I2fa0251358ed66d928477c0b55933ca028c8bd53
CRs-Fixed: 2331850
This commit is contained in:
Wu Gao 2018-10-12 18:16:09 +08:00 • committed by nshrivas
commit b9a832ec33
1 changed files with 3 additions and 1 deletions
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4
wmi/src/wmi_unified_tlv.c
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@ -23,6 +23,7 @@
#include "wmi_version_whitelist.h"
#include <qdf_module.h>
#include <wlan_defs.h>
#include <wlan_cmn.h>
#include <htc_services.h>
#ifdef FEATURE_WLAN_APF
#include "wmi_unified_apf_tlv.h"
@ -17045,7 +17046,8 @@ static QDF_STATUS extract_chainmask_tables_tlv(wmi_unified_t wmi_handle,
if (!hw_caps)
return QDF_STATUS_E_INVAL;
if (!hw_caps->num_chainmask_tables)
if ((!hw_caps->num_chainmask_tables) ||
(hw_caps->num_chainmask_tables > PSOC_MAX_CHAINMASK_TABLES))
return QDF_STATUS_E_INVAL;
chainmask_caps = param_buf->mac_phy_chainmask_caps;