Description of problem:
Logged into Xfce from the greeter.
SELinux is preventing avahi-daemon from 'read' accesses on the file environ.

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that avahi-daemon should be allowed read access on the environ file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'avahi-daemon' --raw | audit2allow -M my-avahidaemon
# semodule -X 300 -i my-avahidaemon.pp

Additional Information:
Source Context                system_u:system_r:avahi_t:s0
Target Context                system_u:system_r:init_t:s0
Target Objects                environ [ file ]
Source                        avahi-daemon
Source Path                   avahi-daemon
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
SELinux Policy RPM            selinux-policy-targeted-3.14.7-23.fc34.noarch
Local Policy RPM              selinux-policy-targeted-3.14.7-23.fc34.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux (removed) 5.11.1-300.fc34.x86_64 #1 SMP Tue
                              Feb 23 14:59:16 UTC 2021 x86_64 x86_64
Alert Count                   1
First Seen                    2021-02-25 10:56:21 AEDT
Last Seen                     2021-02-25 10:56:21 AEDT
Local ID                      4e3cabfc-56df-4e92-9ab0-7e537e1da021

Raw Audit Messages
type=AVC msg=audit(1614210981.856:142): avc:  denied  { read } for  pid=1058 comm="avahi-daemon" name="environ" dev="proc" ino=13343 scontext=system_u:system_r:avahi_t:s0 tcontext=system_u:system_r:init_t:s0 tclass=file permissive=1


Hash: avahi-daemon,avahi_t,init_t,file,read

Version-Release number of selected component:
selinux-policy-targeted-3.14.7-23.fc34.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.14.0
hashmarkername: setroubleshoot
kernel:         5.11.1-300.fc34.x86_64
type:           libreport

Potential duplicate: bug 1932691