diff --git a/src/ap/drv_callbacks.c b/src/ap/drv_callbacks.c
index 36678e7a3..ece5dd2ad 100644
--- a/src/ap/drv_callbacks.c
+++ b/src/ap/drv_callbacks.c
@@ -43,7 +43,6 @@
 #include "fils_hlp.h"
 #include "neighbor_db.h"
 
-
 #ifdef CONFIG_FILS
 void hostapd_notify_assoc_fils_finish(struct hostapd_data *hapd,
 				      struct sta_info *sta)
@@ -1722,6 +1721,36 @@ static void hostapd_event_wds_sta_interface_status(struct hostapd_data *hapd,
 }
 
 
+#ifdef CONFIG_IEEE80211AX
+static void hostapd_event_bss_color_collision(struct hostapd_data *hapd,
+					      u64 bitmap)
+{
+	wpa_printf(MSG_DEBUG, "BSS color collision on %s", hapd->conf->iface);
+	hostapd_switch_color(hapd, bitmap);
+}
+
+static void hostapd_event_cca(struct hostapd_data *hapd, enum wpa_event_type event)
+{
+	switch (event) {
+	case EVENT_CCA_STARTED_NOTIFY:
+		wpa_printf(MSG_DEBUG, "CCA started on on %s", hapd->conf->iface);
+		break;
+	case EVENT_CCA_NOTIFY:
+		wpa_printf(MSG_DEBUG, "CCA finished on on %s", hapd->conf->iface);
+		hapd->conf->he_op.he_bss_color = hapd->cca_color;
+		hostapd_cleanup_cca_params(hapd);
+		break;
+	case EVENT_CCA_ABORTED_NOTIFY:
+		wpa_printf(MSG_DEBUG, "CCA aborted on on %s", hapd->conf->iface);
+		hostapd_cleanup_cca_params(hapd);
+		break;
+	default:
+		break;
+	}
+}
+#endif
+
+
 #ifdef CONFIG_OWE
 static int hostapd_notif_update_dh_ie(struct hostapd_data *hapd,
 				      const u8 *peer, const u8 *ie,
@@ -2028,6 +2057,17 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
 			data->wds_sta_interface.ifname,
 			data->wds_sta_interface.sta_addr);
 		break;
+#ifdef CONFIG_IEEE80211AX
+	case EVENT_BSS_COLOR_COLLISION:
+		hostapd_event_bss_color_collision(hapd,
+						  data->bss_color_collision.bitmap);
+		break;
+	case EVENT_CCA_STARTED_NOTIFY:
+	case EVENT_CCA_ABORTED_NOTIFY:
+	case EVENT_CCA_NOTIFY:
+		hostapd_event_cca(hapd, event);
+		break;
+#endif
 	default:
 		wpa_printf(MSG_DEBUG, "Unknown event %d", event);
 		break;
diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index 3223dc781..07ff33efd 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -5084,6 +5084,26 @@ enum wpa_event_type {
 	 * is required to provide more details of the frame.
 	 */
 	EVENT_UNPROT_BEACON,
+
+	/**
+	  * EVENT_BSS_COLOR_COLLISION - Notification of a BSS color collision
+	  */
+	EVENT_BSS_COLOR_COLLISION,
+
+	/**
+	 * EVENT_CCA_STARTED_NOTIFY - Notification that CCA has started
+	 */
+	EVENT_CCA_STARTED_NOTIFY,
+
+	/**
+	 * EVENT_CCA_ABORTED_NOTIFY - Notification that CCA has aborted
+	 */
+	EVENT_CCA_ABORTED_NOTIFY,
+
+	/**
+	 * EVENT_CCA_NOTIFY - Notification that CCA has completed
+	 */
+	EVENT_CCA_NOTIFY,
 };
 
 
@@ -5943,6 +5963,13 @@ union wpa_event_data {
 	struct unprot_beacon {
 		const u8 *sa;
 	} unprot_beacon;
+
+	/**
+	 * struct bss_color_collision - Data for EVENT_BSS_COLOR_COLLISION
+	 */
+	struct bss_color_collision {
+		u64 bitmap;
+	} bss_color_collision;
 };
 
 /**
diff --git a/src/drivers/driver_common.c b/src/drivers/driver_common.c
index a7ebe9566..0c0a23f09 100644
--- a/src/drivers/driver_common.c
+++ b/src/drivers/driver_common.c
@@ -90,6 +90,10 @@ const char * event_to_string(enum wpa_event_type event)
 	E2S(WDS_STA_INTERFACE_STATUS);
 	E2S(UPDATE_DH);
 	E2S(UNPROT_BEACON);
+	E2S(BSS_COLOR_COLLISION);
+	E2S(CCA_STARTED_NOTIFY);
+	E2S(CCA_ABORTED_NOTIFY);
+	E2S(CCA_NOTIFY);
 	}
 
 	return "UNKNOWN";
diff --git a/src/drivers/driver_nl80211_event.c b/src/drivers/driver_nl80211_event.c
index ce95e9cd3..00a39a4ba 100644
--- a/src/drivers/driver_nl80211_event.c
+++ b/src/drivers/driver_nl80211_event.c
@@ -145,7 +145,10 @@ static const char * nl80211_command_to_string(enum nl80211_commands cmd)
 	C2S(NL80211_CMD_UPDATE_OWE_INFO)
 	C2S(NL80211_CMD_UNPROT_BEACON)
 	C2S(NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS)
-
+	C2S(NL80211_CMD_OBSS_COLOR_COLLISION)
+	C2S(NL80211_CMD_COLOR_CHANGE_ANNOUNCEMENT_STARTED)
+	C2S(NL80211_CMD_COLOR_CHANGE_ANNOUNCEMENT_ABORTED)
+	C2S(NL80211_CMD_COLOR_CHANGE_ANNOUNCEMENT_COMPLETED)
 	default:
 		return "NL80211_CMD_UNKNOWN";
 	}
@@ -2597,6 +2600,51 @@ nl80211_control_port_frame_tx_status(struct wpa_driver_nl80211_data *drv,
 	wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event);
 }
 
+#ifdef CONFIG_IEEE80211AX
+static void mlme_event_obss_color_collision(struct wpa_driver_nl80211_data *drv,
+					    struct nlattr *tb[])
+{
+	union wpa_event_data data;
+
+	if (!tb[NL80211_ATTR_OBSS_COLOR_BITMAP])
+		return;
+
+	os_memset(&data, 0, sizeof(data));
+	data.bss_color_collision.bitmap = nla_get_u64(tb[NL80211_ATTR_OBSS_COLOR_BITMAP]);
+
+	wpa_printf(MSG_DEBUG, "nl80211: BSS color collision - bitmap %08lx",
+		   data.bss_color_collision.bitmap);
+
+	wpa_supplicant_event(drv->ctx, EVENT_BSS_COLOR_COLLISION, &data);
+}
+
+static void mlme_event_color_change_announcement_started(struct wpa_driver_nl80211_data *drv)
+{
+	union wpa_event_data data = {};
+
+	wpa_printf(MSG_DEBUG, "nl80211: CCA started");
+
+	wpa_supplicant_event(drv->ctx, EVENT_CCA_STARTED_NOTIFY, &data);
+}
+
+static void mlme_event_color_change_announcement_aborted(struct wpa_driver_nl80211_data *drv)
+{
+	union wpa_event_data data = {};
+
+	wpa_printf(MSG_DEBUG, "nl80211: CCA aborted");
+
+	wpa_supplicant_event(drv->ctx, EVENT_CCA_ABORTED_NOTIFY, &data);
+}
+
+static void mlme_event_color_change_announcement_completed(struct wpa_driver_nl80211_data *drv)
+{
+	union wpa_event_data data = {};
+
+	wpa_printf(MSG_DEBUG, "nl80211: CCA completed");
+
+	wpa_supplicant_event(drv->ctx, EVENT_CCA_NOTIFY, &data);
+}
+#endif
 
 static void do_process_drv_event(struct i802_bss *bss, int cmd,
 				 struct nlattr **tb)
@@ -2825,6 +2873,20 @@ static void do_process_drv_event(struct i802_bss *bss, int cmd,
 						     tb[NL80211_ATTR_ACK],
 						     tb[NL80211_ATTR_COOKIE]);
 		break;
+#ifdef CONFIG_IEEE80211AX
+	case NL80211_CMD_OBSS_COLOR_COLLISION:
+		mlme_event_obss_color_collision(drv, tb);
+		break;
+	case NL80211_CMD_COLOR_CHANGE_ANNOUNCEMENT_STARTED:
+		mlme_event_color_change_announcement_started(drv);
+		break;
+	case NL80211_CMD_COLOR_CHANGE_ANNOUNCEMENT_ABORTED:
+		mlme_event_color_change_announcement_aborted(drv);
+		break;
+	case NL80211_CMD_COLOR_CHANGE_ANNOUNCEMENT_COMPLETED:
+		mlme_event_color_change_announcement_completed(drv);
+		break;
+#endif
 	default:
 		wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event "
 			"(cmd=%d)", cmd);
