Description of problem: xfburn defaults to /tmp for temporary files (presumably including large images). On Fedora /tmp defaults to tmpfs @ 4GB which could be exceeded by large images.
This bug appears to have been reported against 'rawhide' during the Fedora 24 development cycle. Changing version to '24'. More information and reason for this action is here: https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora24#Rawhide_Rebase
I have created a patch to change the default /var/tmp and can commit if there's no objection. I have built the package a mock and done basic testing (correctly defaults to /var/tmp) but have not attempted to write an image > 4GB.
I have check in the patch and built for rawhide. It would be nice to have this propagated to the other releases. http://koji.fedoraproject.org/koji/taskinfo?taskID=13800008