diff --git a/umac/scan/core/src/wlan_scan_manager.c b/umac/scan/core/src/wlan_scan_manager.c
index b1d935d96347..7d84c7e89ac5 100644
--- a/umac/scan/core/src/wlan_scan_manager.c
+++ b/umac/scan/core/src/wlan_scan_manager.c
@@ -600,3 +600,75 @@ exit:
 
 	return QDF_STATUS_SUCCESS;
 }
+
+QDF_STATUS scm_scan_event_flush_callback(struct scheduler_msg *msg)
+{
+	struct wlan_objmgr_vdev *vdev;
+	struct scan_event_info *event_info;
+
+	if (!msg || !msg->bodyptr) {
+		scm_err("msg: %p, bodyptr: %p", msg, msg->bodyptr);
+		return QDF_STATUS_E_NULL_VALUE;
+	}
+	event_info = msg->bodyptr;
+	vdev = event_info->vdev;
+
+	/* free event info memory */
+	qdf_mem_free(event_info);
+	wlan_objmgr_vdev_release_ref(vdev, WLAN_SCAN_ID);
+
+	return QDF_STATUS_SUCCESS;
+}
+
+QDF_STATUS scm_bcn_probe_flush_callback(struct scheduler_msg *msg)
+{
+	struct scan_bcn_probe_event *bcn;
+
+	bcn = msg->bodyptr;
+
+	if (!bcn) {
+		scm_err("bcn is NULL");
+		return QDF_STATUS_E_NULL_VALUE;
+	}
+	if (bcn->psoc)
+		wlan_objmgr_psoc_release_ref(bcn->psoc, WLAN_SCAN_ID);
+	if (bcn->rx_data)
+		qdf_mem_free(bcn->rx_data);
+	if (bcn->buf)
+		qdf_nbuf_free(bcn->buf);
+	qdf_mem_free(bcn);
+
+	return QDF_STATUS_SUCCESS;
+}
+
+QDF_STATUS scm_scan_start_flush_callback(struct scheduler_msg *msg)
+{
+	struct scan_start_request *req;
+
+	if (!msg || !msg->bodyptr) {
+		scm_err("msg: 0x%p, bodyptr: 0x%p", msg, msg->bodyptr);
+		return QDF_STATUS_E_NULL_VALUE;
+	}
+	req = msg->bodyptr;
+	wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID);
+	scm_scan_free_scan_request_mem(req);
+
+	return QDF_STATUS_SUCCESS;
+}
+
+QDF_STATUS scm_scan_cancel_flush_callback(struct scheduler_msg *msg)
+{
+	struct scan_cancel_request *req;
+
+	if (!msg || !msg->bodyptr) {
+		scm_err("msg: 0x%p, bodyptr: 0x%p", msg, msg->bodyptr);
+		return QDF_STATUS_E_NULL_VALUE;
+	}
+
+	req = msg->bodyptr;
+	wlan_objmgr_vdev_release_ref(req->vdev, WLAN_SCAN_ID);
+	/* Free cancel request memory */
+	qdf_mem_free(req);
+
+	return QDF_STATUS_SUCCESS;
+}
diff --git a/umac/scan/core/src/wlan_scan_manager.h b/umac/scan/core/src/wlan_scan_manager.h
index 82acf1e051b6..e879c4d6e0ff 100644
--- a/umac/scan/core/src/wlan_scan_manager.h
+++ b/umac/scan/core/src/wlan_scan_manager.h
@@ -85,4 +85,44 @@ QDF_STATUS scm_scan_event_handler(struct scheduler_msg *msg);
  */
 QDF_STATUS scm_scan_free_scan_request_mem(struct scan_start_request *req);
 
+/**
+ * scm_scan_event_flush_callback() - flush scan event
+ * @msg: scheduler message object containing scan event
+ *
+ * This function call is invoked when scheduler thread is going down
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS scm_scan_event_flush_callback(struct scheduler_msg *msg);
+
+/**
+ * scm_bcn_probe_flush_callback() - flush beacon/probe response
+ * @msg: scheduler message object containing scan event
+ *
+ * This function call is invoked when scheduler thread is going down
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS scm_bcn_probe_flush_callback(struct scheduler_msg *msg);
+
+/**
+ * scm_scan_start_flush_callback() - flush scan start request
+ * @msg: scheduler message object containing scan event
+ *
+ * This function call is invoked when scheduler thread is going down
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS scm_scan_start_flush_callback(struct scheduler_msg *msg);
+
+/**
+ * scm_scan_cancel_flush_callback() - flush scan cancel request
+ * @msg: scheduler message object containing scan event
+ *
+ * This function call is invoked when scheduler thread is going down
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS scm_scan_cancel_flush_callback(struct scheduler_msg *msg);
+
 #endif
diff --git a/umac/scan/dispatcher/src/wlan_scan_tgt_api.c b/umac/scan/dispatcher/src/wlan_scan_tgt_api.c
index 8a53f76af20a..37931eb3551e 100644
--- a/umac/scan/dispatcher/src/wlan_scan_tgt_api.c
+++ b/umac/scan/dispatcher/src/wlan_scan_tgt_api.c
@@ -209,6 +209,7 @@ tgt_scan_event_handler(struct wlan_objmgr_psoc *psoc,
 	}
 	msg.bodyptr = event_info;
 	msg.callback = scm_scan_event_handler;
+	msg.flush_callback = scm_scan_event_flush_callback;
 
 	status = scheduler_post_msg(QDF_MODULE_ID_TARGET_IF, &msg);
 	if (QDF_IS_STATUS_ERROR(status)) {
@@ -269,6 +270,7 @@ QDF_STATUS tgt_scan_bcn_probe_rx_callback(struct wlan_objmgr_psoc *psoc,
 
 	msg.bodyptr = bcn;
 	msg.callback = scm_handle_bcn_probe;
+	msg.flush_callback = scm_bcn_probe_flush_callback;
 
 	status = scheduler_post_msg(QDF_MODULE_ID_TARGET_IF, &msg);
 
@@ -279,6 +281,7 @@ QDF_STATUS tgt_scan_bcn_probe_rx_callback(struct wlan_objmgr_psoc *psoc,
 		qdf_mem_free(bcn);
 		qdf_nbuf_free(buf);
 	}
+
 	return status;
 }
 
diff --git a/umac/scan/dispatcher/src/wlan_scan_ucfg_api.c b/umac/scan/dispatcher/src/wlan_scan_ucfg_api.c
index d030502d2080..95a96f4988c8 100644
--- a/umac/scan/dispatcher/src/wlan_scan_ucfg_api.c
+++ b/umac/scan/dispatcher/src/wlan_scan_ucfg_api.c
@@ -358,6 +358,7 @@ ucfg_scan_start(struct scan_start_request *req)
 
 	msg.bodyptr = req;
 	msg.callback = scm_scan_start_req;
+	msg.flush_callback = scm_scan_start_flush_callback;
 
 	status = scheduler_post_msg(QDF_MODULE_ID_OS_IF, &msg);
 	if (QDF_IS_STATUS_ERROR(status)) {
@@ -393,6 +394,7 @@ ucfg_scan_cancel(struct scan_cancel_request *req)
 
 	msg.bodyptr = req;
 	msg.callback = scm_scan_cancel_req;
+	msg.flush_callback = scm_scan_cancel_flush_callback;
 
 	status = scheduler_post_msg(QDF_MODULE_ID_OS_IF, &msg);
 	if (QDF_IS_STATUS_ERROR(status)) {