Tainted Kernels

• Module verification failed - signature and/or required key missing - tainting kernel (Red Hat)

https://access.redhat.com/solutions/3484741

• <module_name>: module verification failed: signature and/or required key missing - tainting kernel (Red Hat)

https://access.redhat.com/solutions/800133

• What is a tainted kernel in Linux?

https://unix.stackexchange.com/questions/118116/what-is-a-tainted-kernel-in-linux

• Tainted kernels

https://www.kernel.org/doc/html/latest/admin-guide/tainted-kernels.html