Hi, I recently adopted spice-gtk and usbredir so I looked into this. In v0.39, upstream removed setuid root from usb-acl-helper and replaced it with the CAP_FOWNER permission. The merge request was here for reference. I'm going to see if I can remove some of the custom debian/rules logic for usb-acl-helper to accommodate that change, which should fix this issue.
Additionally if anyone has problems with the CAP_FOWNER permissions, there's a second issue here to remove CAP_FOWNER which is currently open upstream which would further minimize the privileges needed. Lance Lin <lqi...@protonmail.com> GPG Fingerprint: 8CAD 1250 8EE0 3A41 7223 03EC 7096 F91E D75D 028F
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