Description of problem:
I ran firefox in a sandbox using flash.
SELinux is preventing at-spi-bus-laun from 'open' accesses on the file /run/user/1000/dconf/user.

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

If you believe that at-spi-bus-laun should be allowed open access on the user 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:
# grep at-spi-bus-laun /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                unconfined_u:unconfined_r:sandbox_web_t:s0:c286,c6
                              40
Target Context                unconfined_u:object_r:config_home_t:s0
Target Objects                /run/user/1000/dconf/user [ file ]
Source                        at-spi-bus-laun
Source Path                   at-spi-bus-laun
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-152.fc23.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux (removed) 4.2.3-300.fc23.x86_64 #1 SMP Mon
                              Oct 5 15:42:54 UTC 2015 x86_64 x86_64
Alert Count                   1
First Seen                    2015-10-29 19:55:20 CET
Last Seen                     2015-10-29 19:55:20 CET
Local ID                      63689bc0-b04f-4a2f-90b3-6632fa72103e

Raw Audit Messages
type=AVC msg=audit(1446144920.888:656): avc:  denied  { open } for  pid=4990 comm="at-spi-bus-laun" path="/run/user/1000/dconf/user" dev="tmpfs" ino=75011 scontext=unconfined_u:unconfined_r:sandbox_web_t:s0:c286,c640 tcontext=unconfined_u:object_r:config_home_t:s0 tclass=file permissive=1


Hash: at-spi-bus-laun,sandbox_web_t,config_home_t,file,open

Version-Release number of selected component:
selinux-policy-3.13.1-152.fc23.noarch

Additional info:
reporter:       libreport-2.6.2
hashmarkername: setroubleshoot
kernel:         4.2.3-300.fc23.x86_64
type:           libreport