From a4f790c140d9813c3af66a9b367b4568e053278a Mon Sep 17 00:00:00 2001 From: Ashish Kumar Goswami Date: Fri, 23 Dec 2016 13:20:45 +0530 Subject: qcacld-2.0: Avoid integer overflow in wma_enable_arp_ns_offload In the function wma_enable_arp_ns_offload(), the len variable is defined as signed 32 bit, whereas wmi_buf_alloc() takes unsigned 16 bit as input also there is no limit on input of num_ns_offload_count. Fix is to define the len variable in wma_enable_arp_ns_offload() as unsigned 32 bit. The length input for wmi_buf_alloc() is also extended and re-defined as unsigned 32 bit. Add limit check before using num_ns_offload_count. Change-Id: I5063df9551074e964eef67abeb8afcf104e50808 CRs-Fixed: 1103099 --- CORE/SERVICES/COMMON/wmi_unified_api.h | 4 ++-- CORE/SERVICES/WMA/wma.c | 9 +++++++-- CORE/SERVICES/WMI/wmi_unified.c | 4 ++-- 3 files changed, 11 insertions(+), 6 deletions(-) diff --git a/CORE/SERVICES/COMMON/wmi_unified_api.h b/CORE/SERVICES/COMMON/wmi_unified_api.h index cd9f923..2912d47 100644 --- a/CORE/SERVICES/COMMON/wmi_unified_api.h +++ b/CORE/SERVICES/COMMON/wmi_unified_api.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2013-2014 The Linux Foundation. All rights reserved. + * Copyright (c) 2013-2017 The Linux Foundation. All rights reserved. * * Previously licensed under the ISC license by Qualcomm Atheros, Inc. * @@ -69,7 +69,7 @@ wmi_unified_remove_work(struct wmi_unified* wmi_handle); * @return wmi_buf_t. */ wmi_buf_t -wmi_buf_alloc(wmi_unified_t wmi_handle, u_int16_t len); +wmi_buf_alloc(wmi_unified_t wmi_handle, uint32_t len); /** diff --git a/CORE/SERVICES/WMA/wma.c b/CORE/SERVICES/WMA/wma.c index f09c8fd..c802405 100644 --- a/CORE/SERVICES/WMA/wma.c +++ b/CORE/SERVICES/WMA/wma.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2013-2016 The Linux Foundation. All rights reserved. + * Copyright (c) 2013-2017 The Linux Foundation. All rights reserved. * * Previously licensed under the ISC license by Qualcomm Atheros, Inc. * @@ -22719,7 +22719,7 @@ static VOS_STATUS wma_enable_arp_ns_offload(tp_wma_handle wma, tpSirHostOffloadR WMI_ARP_OFFLOAD_TUPLE *arp_tuple; A_UINT8* buf_ptr; wmi_buf_t buf; - int32_t len; + uint32_t len; u_int8_t vdev_id; uint32_t count = 0, num_ns_ext_tuples = 0; @@ -22740,6 +22740,11 @@ static VOS_STATUS wma_enable_arp_ns_offload(tp_wma_handle wma, tpSirHostOffloadR if (!bArpOnly) count = pHostOffloadParams->num_ns_offload_count; + if (count >= SIR_MAC_NUM_TARGET_IPV6_NS_OFFLOAD_NA) { + vos_mem_free(pHostOffloadParams); + return VOS_STATUS_E_FAILURE; + } + len = sizeof(WMI_SET_ARP_NS_OFFLOAD_CMD_fixed_param) + WMI_TLV_HDR_SIZE + // TLV place holder size for array of NS tuples WMI_MAX_NS_OFFLOADS*sizeof(WMI_NS_OFFLOAD_TUPLE) + diff --git a/CORE/SERVICES/WMI/wmi_unified.c b/CORE/SERVICES/WMI/wmi_unified.c index 463a324..c0663d3 100644 --- a/CORE/SERVICES/WMI/wmi_unified.c +++ b/CORE/SERVICES/WMI/wmi_unified.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2014-2016 The Linux Foundation. All rights reserved. + * Copyright (c) 2014-2017 The Linux Foundation. All rights reserved. * * Previously licensed under the ISC license by Qualcomm Atheros, Inc. * @@ -131,7 +131,7 @@ uint16_t wmi_get_max_msg_len(wmi_unified_t wmi_handle) } wmi_buf_t -wmi_buf_alloc(wmi_unified_t wmi_handle, u_int16_t len) +wmi_buf_alloc(wmi_unified_t wmi_handle, uint32_t len) { wmi_buf_t wmi_buf; -- cgit v1.1