CalendarProviderBroadcastReceiver %1$s.CalendarDebugActivity The application cannot draw overlays Could not get message key in shared preferences dumpsys activity %1$s Device is vulnerable to b/174046397 hence any app with "SYSTEM_ALERT_WINDOW" can overlay the CalendarDebugActivity screen message OverlayButton Overlay UI did not appear on the screen result mResumed=true CVE_2021_0487_prefs The CalendarDebugActivity is not currently running on the device