Provide references for CVE-2021-47221.
Where can I find more information about CVE-2021-47221?
References are available at: https://git.kernel.org/stable/c/f6ed2357541612a13a5841b3af4dc32ed984a25f, https://git.kernel.org/stable/c/ce6e8bee7a3883e8008b30f5887dbb426aac6a35, https://git.kernel.org/stable/c/e41a49fadbc80b60b48d3c095d9e2ee7ef7c9a8e.