Provide references for CVE-2021-47439.
Where can I find more information about CVE-2021-47439?
References are available at: https://git.kernel.org/stable/c/f2e1de075018cf71bcd7d628e9f759cb8540b0c3, https://git.kernel.org/stable/c/383239a33cf29ebee9ce0d4e0e5c900b77a16148, https://git.kernel.org/stable/c/ef1100ef20f29aec4e62abeccdb5bdbebba1e378.