Comment # 3 on bug 1174406 from Larry Finger

I tested a Win 10 VM using VB 6.1.10 with kernel 5.7.7. I then did the upgrade
to VB 6.1.12 with kernel 5.7.9. USB passthru worked with both setups.

Your system contains file ~/.config/VirtualBox/enable, which is needed to setup
passthru. I have no idea what might be wrong. To make sure that the VB devices
are correct, run the following command and post your output:
cat /usr/lib/udev/rules.d/60-vboxdrv.rules

My system contains the following:

KERNEL=="vboxdrv", NAME="vboxdrv", OWNER="root", GROUP="root", MODE="0600"
KERNEL=="vboxdrvu", NAME="vboxdrvu", OWNER="root", GROUP="root", MODE="0666"
KERNEL=="vboxnetctl", NAME="vboxnetctl", OWNER="root", GROUP="root",
MODE="0600"
SUBSYSTEM=="usb_device", ACTION=="add",
RUN+="/usr/lib/virtualbox/VBoxCreateUSBNode.sh $major $minor
$attr{bDeviceClass}"
SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device",
RUN+="/usr/lib/virtualbox/VBoxCreateUSBNode.sh $major $minor
$attr{bDeviceClass}"
SUBSYSTEM=="usb_device", ACTION=="remove",
RUN+="/usr/lib/virtualbox/VBoxCreateUSBNode.sh --remove $major $minor"
SUBSYSTEM=="usb", ACTION=="remove", ENV{DEVTYPE}=="usb_device",
RUN+="/usr/lib/virtualbox/VBoxCreateUSBNode.sh --remove $major $minor"