Does CVE-2021-26708 affect Cloudlinux 6 and Cloudlinux 7?
Everyone relying on a major distribution that uses a kernel released after November 2019 right through early February 2021. This includes Red Hat Enterprise Linux (RHEL) 8, CentOS 8, and Ubuntu 20.10.
It doesn’t matter where in your organization the operating system is deployed, or the importance of that deployment: your organization is at risk as long as this vulnerability remains unpatched.
At this moment in time, it appears that CloudLinux 6 and 7 were unaffected due to the kernel version not being close to version 5.5.
You can test the version of your kernel with the following command: