Provide references for CVE-2021-47021.
Where can I find more information about CVE-2021-47021?
References are available at: https://git.kernel.org/stable/c/81483309ce861a9fa7835322787f68a443fea364, https://git.kernel.org/stable/c/d754c80ae82a662e692a82faad71b8c218cb7f52, https://git.kernel.org/stable/c/e9d32af478cfc3744a45245c0b126738af4b3ac4.