CVMServer -- Mac OS X Core Virtual Machine Server— is a system daemon that handles generic task execution in a slave process.
Have noticed the same CVMServer Issue on Brand New MBA M1 from about day two March 18, 2012. and even after the Big Sur 11.2.3 Update. Interesting in that the PID on each crash is different than each other. Though in my case, Screen Saver is not activated nor waking from Sleep. Further, the Computer in not ill affected nor perform any differently. It is as if it is a Silent crash that is only captured in Console.