Provide references for CVE-2021-1772.
Where can I find more information about CVE-2021-1772?
References are available at: https://support.apple.com/en-us/HT212147, https://support.apple.com/en-us/HT212146, https://support.apple.com/en-us/HT212148, https://support.apple.com/en-us/HT212149, https://www.zerodayinitiative.com/advisories/ZDI-21-758/.