Is AWS Linux / Linux 2 vulnerable to CVE-2021-4034?

I have not been able to confirm the use of pkexec in Amazon Linux AMIs.

But here is a mitigation: A temporary mitigation for operating systems that have yet to push a patch is to strip pkexec of the read/write rights with the following command: chmod 0755 /usr/bin/pkexec

Source: https://www.bleepingcomputer.com/news/security/linux-system-service-bug-gives-root-on-all-major-distros-exploit-released/