Description of problem:
SELinux is preventing evince-thumbnai from using the 'dac_override' capabilities.

*****  Plugin dac_override (91.4 confidence) suggests   **********************

If você deseja ajudar a identificar se o domínio precisa deste acesso ou se você possui um arquivo com as permissões erradas em seu sistema.
Then ligue a auditoria completa para obter informações de caminho sobre ofender arquivo e gerar um erro novamente.
Do

Turn on full auditing
# auditctl -w /etc/shadow -p w
Try to recreate AVC. Then execute
# ausearch -m avc -ts recent
If you see PATH record check ownership/permissions on file, and fix it,
otherwise report as a bugzilla.

*****  Plugin catchall (9.59 confidence) suggests   **************************

If você acredita que o evince-thumbnai deva ser permitido a capacidade de dac_override  por default.
Then você deve informar que este é um erro.
Você pode gerar um módulo de política local para permitir este acesso.
Do
allow this access for now by executing:
# ausearch -c 'evince-thumbnai' --raw | audit2allow -M my-evincethumbnai
# semodule -X 300 -i my-evincethumbnai.pp

Additional Information:
Source Context                unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023
Target Context                unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023
Target Objects                Unknown [ capability ]
Source                        evince-thumbnai
Source Path                   evince-thumbnai
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-191.13.fc24.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.6.7-300.fc24.x86_64 #1 SMP Wed
                              Aug 17 18:48:43 UTC 2016 x86_64 x86_64
Alert Count                   72
First Seen                    2016-08-25 20:54:54 BRT
Last Seen                     2016-08-25 20:55:34 BRT
Local ID                      9ac06e29-617c-47bd-9924-033a8cd2b439

Raw Audit Messages
type=AVC msg=audit(1472169334.431:373): avc:  denied  { dac_override } for  pid=2680 comm="gnome-thumbnail" capability=1  scontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tclass=capability permissive=0


Hash: evince-thumbnai,thumb_t,thumb_t,capability,dac_override

Version-Release number of selected component:
selinux-policy-3.13.1-191.13.fc24.noarch

Additional info:
reporter:       libreport-2.7.2
hashmarkername: setroubleshoot
kernel:         4.6.7-300.fc24.x86_64
type:           libreport

Potential duplicate: bug 1295226