Description of problem:
Unknown, these randomly keep showing up. It looks like Selinux doesn't like gnome-shell temp files.
SELinux is preventing gnome-shell from 'execute' accesses on the file 2F7661722F6C69622F67646D2F233539363236202864656C6574656429.

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

If you believe that gnome-shell should be allowed execute access on the 2F7661722F6C69622F67646D2F233539363236202864656C6574656429 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 'gnome-shell' --raw | audit2allow -M my-gnomeshell
# semodule -X 300 -i my-gnomeshell.pp

Additional Information:
Source Context                system_u:system_r:xdm_t:s0-s0:c0.c1023
Target Context                system_u:object_r:xdm_var_lib_t:s0
Target Objects                2F7661722F6C69622F67646D2F233539363236202864656C65
                              74656429 [ file ]
Source                        gnome-shell
Source Path                   gnome-shell
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-224.fc25.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.8.8-300.fc25.x86_64 #1 SMP Tue
                              Nov 15 18:10:06 UTC 2016 x86_64 x86_64
Alert Count                   6
First Seen                    2016-11-22 23:33:36 CST
Last Seen                     2016-11-28 00:30:19 CST
Local ID                      f26d34cb-68fa-4b1e-be6d-db9937a22f51

Raw Audit Messages
type=AVC msg=audit(1480314619.849:204): avc:  denied  { execute } for  pid=1391 comm="gnome-shell" path=2F7661722F6C69622F67646D2F233539363236202864656C6574656429 dev="sdc4" ino=59626 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:xdm_var_lib_t:s0 tclass=file permissive=0


Hash: gnome-shell,xdm_t,xdm_var_lib_t,file,execute

Version-Release number of selected component:
selinux-policy-3.13.1-224.fc25.noarch

Additional info:
reporter:       libreport-2.8.0
hashmarkername: setroubleshoot
kernel:         4.8.8-300.fc25.x86_64
type:           libreport

Potential duplicate: bug 1348797