QPDF needs to have means for detection recursion loops. Upstream patch: https://github.com/qpdf/qpdf/commit/701b518d5c56a1449825a3a37a716c58e05e1c3e
qpdf-6.0.0-4.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2017-5bca8ec531
qpdf-6.0.0-6.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-e58a762c3f
qpdf-6.0.0-4.fc25 has been pushed to the Fedora 25 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-2017-5bca8ec531
qpdf-6.0.0-6.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-e58a762c3f
qpdf-6.0.0-6.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.