Provide references for CVE-2020-9956.
Where can I find more information about CVE-2020-9956?
References are available at: https://support.apple.com/en-us/HT211843, https://support.apple.com/en-us/HT211850, https://support.apple.com/en-us/HT211844, https://support.apple.com/en-us/HT211931, https://support.apple.com/en-us/HT212011.