Provide references for CVE-2021-30928.
Where can I find more information about CVE-2021-30928?
References are available at: https://support.apple.com/en-us/HT212804, https://support.apple.com/en-us/HT212807, https://support.apple.com/en-us/HT212814, https://support.apple.com/en-us/HT212819, https://support.apple.com/en-us/HT212815, https://support.apple.com/kb/HT212953.