Description of problem:
SELinux is preventing setpriv from using the 'nnp_transition' accesses on a process.

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

If you believe that setpriv should be allowed nnp_transition access on processes labeled xserver_t 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 'setpriv' --raw | audit2allow -M my-setpriv
# semodule -X 300 -i my-setpriv.pp

Additional Information:
Source Context                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
                              023
Target Context                unconfined_u:unconfined_r:xserver_t:s0-s0:c0.c1023
Target Objects                Unknown [ process2 ]
Source                        setpriv
Source Path                   setpriv
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.14.1-24.fc28.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.16.8-300.fc28.x86_64 #1 SMP Wed
                              May 9 20:23:40 UTC 2018 x86_64 x86_64
Alert Count                   4
First Seen                    2018-05-17 23:33:42 PDT
Last Seen                     2018-05-17 23:34:44 PDT
Local ID                      1d556e44-ef9a-4d6f-97ed-75afb404ac5e

Raw Audit Messages
type=AVC msg=audit(1526625284.351:562): avc:  denied  { nnp_transition } for  pid=7857 comm="Xorg" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:xserver_t:s0-s0:c0.c1023 tclass=process2 permissive=0


Hash: setpriv,unconfined_t,xserver_t,process2,nnp_transition

Version-Release number of selected component:
selinux-policy-3.14.1-24.fc28.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.9.5
hashmarkername: setroubleshoot
kernel:         4.16.9-300.fc28.x86_64
type:           libreport