If you want you may use the latest test version 6.1.35 or you have to wait for 6.1.36 (I am waiting too).

2 facts:

- just because it works for you doesn't mean that the problem doesn't exist for others
- your answer is out of use to me, and especially does not answer my question. Devuan Stable is not egual to Unstable. Not same libs, etc.

For whatever it may be worth, on my main box I run Devuan Beowulf on a backported kernel:

user@devuan:~$ uname -a
Linux devuan 5.10.0-0.bpo.12-amd64 #1 SMP Debian 5.10.103-1~bpo10+1 (2022-03-08) x86_64 GNU/Linux
user@devuan:~$ 

And I have VirtualBox 6.1.34 running a headless Chimaera VM running PiHole 5.90 and a recursive DNS server:

user@devuan:~$ vboxmanage --version
6.1.34r150636
user@devuan:~$ 

user@chimaera:~$ uname -a
Linux chimaera 5.10.0-9-amd64 #1 SMP Debian 5.10.70-1 (2021-09-30) x86_64 GNU/Linux
user@chimaera:~$ 

So my guess is that 5.10 is not a problem.
I guess it may be an issue with the kernel you are using and VM support for that kernel. (?)

Best,

A.

I cant start my VM Virtualbox on my Ceres. Crash!

$ uname -a
Linux pc-z 5.18.0-1-amd64 #1 SMP PREEMPT_DYNAMIC Debian 5.18.2-1 (2022-06-06) x86_64 GNU/Linux

$ vboxmanage --version
6.1.34_Debianr150636

This issue #20914 seems to match.

Here a post on virtualbox forum.

Is it possible to switch to an older kernel? If yes, how?
(knowing that apparently 5.10 seems to be affected too)