Description of problem:
SELinux is preventing /usr/lib/nspluginwrapper/plugin-config from read, write access on the chr_file .

*****  Plugin leaks (86.2 confidence) suggests   *****************************

If você quer ignorar o fato do plugin-config estar tentando acesso read write de  chr_file, pois você acredita que ele não deva precisar deste acesso.
Then você precisa reportar isto como um erro.   
Você pode gerar um módulo de política local para dontaudit este acesso.
Do
# grep /usr/lib/nspluginwrapper/plugin-config /var/log/audit/audit.log | audit2allow -D -M mypol
# semodule -i mypol.pp

*****  Plugin catchall (14.7 confidence) suggests   **************************

If você acredita que o plugin-config deva ser permitido acesso de read write em  chr_file  por default.
Then você precisa reportar este como um erro.
Você pode gerar um módulo de política local para permitir este acesso.
Do
permitir este acesso agora executando:
# grep plugin-config /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                unconfined_u:unconfined_r:mozilla_plugin_config_t:
                              s0-s0:c0.c1023
Target Context                system_u:object_r:xserver_misc_device_t:s0
Target Objects                 [ chr_file ]
Source                        plugin-config
Source Path                   /usr/lib/nspluginwrapper/plugin-config
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           nspluginwrapper-1.4.4-19.fc20.i686
Target RPM Packages           
Policy RPM                    selinux-policy-3.12.1-153.fc20.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.13.10-200.fc20.x86_64 #1 SMP Mon
                              Apr 14 20:34:16 UTC 2014 x86_64 x86_64
Alert Count                   3
First Seen                    2014-04-29 10:40:57 BRT
Last Seen                     2014-04-29 19:28:23 BRT
Local ID                      197d1906-8608-4769-bfe6-0dda2a018430

Raw Audit Messages
type=AVC msg=audit(1398810503.768:380): avc:  denied  { read write } for  pid=2104 comm="plugin-config" path="/dev/ati/card0" dev="devtmpfs" ino=16293 scontext=unconfined_u:unconfined_r:mozilla_plugin_config_t:s0-s0:c0.c1023 tcontext=system_u:object_r:xserver_misc_device_t:s0 tclass=chr_file


type=AVC msg=audit(1398810503.768:380): avc:  denied  { read write } for  pid=2104 comm="plugin-config" path="/dev/ati/card0" dev="devtmpfs" ino=16293 scontext=unconfined_u:unconfined_r:mozilla_plugin_config_t:s0-s0:c0.c1023 tcontext=system_u:object_r:xserver_misc_device_t:s0 tclass=chr_file


type=AVC msg=audit(1398810503.768:380): avc:  denied  { read write } for  pid=2104 comm="plugin-config" path="/dev/ati/card0" dev="devtmpfs" ino=16293 scontext=unconfined_u:unconfined_r:mozilla_plugin_config_t:s0-s0:c0.c1023 tcontext=system_u:object_r:xserver_misc_device_t:s0 tclass=chr_file


type=SYSCALL msg=audit(1398810503.768:380): arch=x86_64 syscall=execve success=yes exit=0 a0=23a7970 a1=23a87c0 a2=23a8800 a3=0 items=0 ppid=2102 pid=2104 auid=1000 uid=1000 gid=1000 euid=1000 suid=1000 fsuid=1000 egid=1000 sgid=1000 fsgid=1000 ses=1 tty=(none) comm=plugin-config exe=/usr/lib/nspluginwrapper/plugin-config subj=unconfined_u:unconfined_r:mozilla_plugin_config_t:s0-s0:c0.c1023 key=(null)

Hash: plugin-config,mozilla_plugin_config_t,xserver_misc_device_t,chr_file,read,write

Additional info:
reporter:       libreport-2.2.1
hashmarkername: setroubleshoot
kernel:         3.13.10-200.fc20.x86_64
type:           libreport

Potential duplicate: bug 873912