MacOSX 11.2.3 Big Sur host, Linux guest; always getting "Kernel driver not installed (rc=-1908)" error popups; no system preferences > security and privacy "Allow" popups to date

[SlugRightsNow]

On every attempted install, this old error keeps popping up:

Kernel driver not installed (rc=-1908)

Make sure the kernel module has been loaded successfully.

where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT.

Another error message shows up in conjunction with it, which is:

The virtual machine 'Linux Test' has terminated unexpectedly during startup with exit code 1 (0x1). Result Code: NS_ERROR_FAILURE (0x80004005) Component: MachineWrap Interface: IMachine {85632c68-b5bb-4316-a900-5eb28d3413df}

My setup is:

Program Version: Virtual Box version 6.1.20 Operating System: macOS Big Sur 11.2.3 (20D91) Hardware Model: Early 2015 13-inch Macbook Pro Memory: 16GB 1867 MHz DDR3 Processor: 3.1 GHz Dual-Core Intel Core i7

This also happened on Big Sur 11.1, and persisted after upgrading. I also did an online Big Sur reinstallation (i.e. from Apple's servers) and it did not solve the issue.

The only information I have been able to glean that may help solve this issue is that Intel-based Big Sur installations seem to be missing the "IOUSBMassStorageClass" kext, which may be deprecated. Seen at Apple's open source page: ​https://opensource.apple.com/

This may be relevant, because terminal would mention it when attempting to run VirtualBox with the .sh file. I have included relevant logs, and I hope this information helps!

[SlugRightsNow]

Logs I obtained while installing, terminal commands I ran to verify my system integrity, and potentially helpful outputs.

[SlugRightsNow]

I just now realize that the formatting is a little messed up. I'm sorry about that! This is the first time I've ever had to submit a ticket, and I thought I fixed everything...I was wrong. I don't see an edit button, but at least all the information is still accurate.