hostapd: add missing NULL pointer check on radar notification

Fixes a race condition that can lead to a hostapd crash Signed-off-by: Felix Fietkau <[email protected]>
remittor-pr · Jan 9, 2024 · d864f68 · d864f68
1 parent 32d2443
commit d864f68
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/package/network/services/hostapd/src/src/ap/ubus.c b/package/network/services/hostapd/src/src/ap/ubus.c
@@ -1907,6 +1907,9 @@ void hostapd_ubus_notify_radar_detected(struct hostapd_iface *iface, int frequen
 	struct hostapd_data *hapd;
 	int i;
 
+	if (!ctx)
+		return;
+
 	blob_buf_init(&b, 0);
 	blobmsg_add_u16(&b, "frequency", frequency);
 	blobmsg_add_u16(&b, "width", chan_width);