qcacld-3.0: Fix potential OOB memory access

Currently in the wma_stats_ext_event_handler(), the buf_ptr
is not pointing correctly to the event data received from FW.
This is leading to an OOB memory access during qdf_mem_copy().

So, to avoid this issue correctly point the buf_ptr to the event
data sent by the FW in the TLV.

Change-Id: Iffa3e96a6a36eff5899a7a9a7febe0ebb9d7878f
CRs-Fixed: 4011656

Author: Aditya Kodukula

drivers/staging/qcacld-3.0/core/wma/src/wma_utils.c

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2013-2021 The Linux Foundation. All rights reserved.
- * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2025 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -708,7 +708,6 @@ int wma_stats_ext_event_handler(void *handle, uint8_t *event_buf,
 	}
 
 	stats_ext_info = param_buf->fixed_param;
-	buf_ptr = (uint8_t *)stats_ext_info;
 
 	alloc_len = sizeof(tSirStatsExtEvent);
 	alloc_len += stats_ext_info->data_len;
@@ -725,7 +724,7 @@ int wma_stats_ext_event_handler(void *handle, uint8_t *event_buf,
 	if (!stats_ext_event)
 		return -ENOMEM;
 
-	buf_ptr += sizeof(wmi_stats_ext_event_fixed_param) + WMI_TLV_HDR_SIZE;
+	buf_ptr = (uint8_t *)param_buf->data;
 
 	stats_ext_event->vdev_id = stats_ext_info->vdev_id;
 	stats_ext_event->event_data_len = stats_ext_info->data_len;
@@ -775,7 +774,6 @@ int wma_stats_ext_event_handler(void *handle, uint8_t *event_buf,
 	}
 
 	stats_ext_info = param_buf->fixed_param;
-	buf_ptr = (uint8_t *)stats_ext_info;
 
 	alloc_len = sizeof(tSirStatsExtEvent);
 	alloc_len += stats_ext_info->data_len;
@@ -791,7 +789,7 @@ int wma_stats_ext_event_handler(void *handle, uint8_t *event_buf,
 	if (!stats_ext_event)
 		return -ENOMEM;
 
-	buf_ptr += sizeof(wmi_stats_ext_event_fixed_param) + WMI_TLV_HDR_SIZE;
+	buf_ptr = (uint8_t *)param_buf->data;
 
 	stats_ext_event->vdev_id = stats_ext_info->vdev_id;
 	stats_ext_event->event_data_len = stats_ext_info->data_len;