An issue was discovered in the Linux kernel before 5.0.9. There is a use-after-free in atalk_proc_exit, related to net/appletalk/atalk_proc.c, net/appletalk/ddp.c, and net/appletalk/sysctl_net_atalk.c.
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1746629]
This was fixed for Fedora with the 5.0.9 stable kernel update.