Provide references for CVE-2021-38788.
Where can I find more information about CVE-2021-38788?
References are available at: https://www.allwinnertech.com/index.php?c=product&a=index&id=92, https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/Allwinner%20R818%20SoC%EF%BC%9Abackground%20service%20has%20EoP%20Vulnerability.md, https://www.cnvd.org.cn/flaw/show/CNVD-2021-46928, https://vul.wangan.com/a/CNVD-2021-46928.