Kernel 4.12 don't import UEFI keys resulting signed kernel modules can't load on a secureboot system. Only default keys is loaded # keyctl list %:.builtin_trusted_keys 1 key in keyring Several users impacted : https://bodhi.fedoraproject.org/updates/FEDORA-2017-14ad2c5d17
kernel-4.12.5-300.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-adc7d95627
kernel-4.12.5-300.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-adc7d95627
kernel-4.12.5-300.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.