This is on 

OS: openSUSE Tumbleweed 20240207
Kernel: 6.7.4-1-default (64-bit)

with

Virtualbox 7.0.14-Virt.1699.733.2-x.86_64
Kernel module 7.0.14_k6.7.4_1-Virt.1699.733.2
Guest Windows 10, Guest Additions 7.0.14r161095
USB-3.0 xHCI Controller activated

VBox host software recognises USB device (ScanSnap Scanner) and allows setting
device filter. But guest does not find device. Hovering the mouse on USB icon
of host software shows "No USB Devices connected". In the list of USB devices
that opens after clicking on the icon, the Scanner is blanked out.

This seems new since upgrade to 6.7.2(?) kernel.

Which part of the log do you need? I am new here and happy to help.