Summary:

SELinux is preventing /usr/bin/knotify4 from loading
/usr/lib/vlc/plugins/codec/librealvideo_plugin.so which requires text
relocation.

Detailed Description:

The knotify4 application attempted to load
/usr/lib/vlc/plugins/codec/librealvideo_plugin.so which requires text
relocation. This is a potential security problem. Most libraries do not need
this permission. Libraries are sometimes coded incorrectly and request this
permission. The SELinux Memory Protection Tests
(http://people.redhat.com/drepper/selinux-mem.html) web page explains how to
remove this requirement. You can configure SELinux temporarily to allow
/usr/lib/vlc/plugins/codec/librealvideo_plugin.so to use relocation as a
workaround, until the library is fixed. Please file a bug report.

Allowing Access:

If you trust /usr/lib/vlc/plugins/codec/librealvideo_plugin.so to run correctly,
you can change the file context to textrel_shlib_t. "chcon -t textrel_shlib_t
'/usr/lib/vlc/plugins/codec/librealvideo_plugin.so'" You must also change the
default file context files on the system in order to preserve them even on a
full relabel. "semanage fcontext -a -t textrel_shlib_t
'/usr/lib/vlc/plugins/codec/librealvideo_plugin.so'"

Fix Command:

chcon -t textrel_shlib_t '/usr/lib/vlc/plugins/codec/librealvideo_plugin.so'

Additional Information:

Source Context                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
                              023
Target Context                system_u:object_r:lib_t:s0
Target Objects                /usr/lib/vlc/plugins/codec/librealvideo_plugin.so
                              [ file ]
Source                        knotify4
Source Path                   /usr/bin/knotify4
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           kdebase-runtime-4.4.92-1.fc13
Target RPM Packages           vlc-core-1.1.0-0.14.fc13
Policy RPM                    selinux-policy-3.7.19-37.fc13
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   allow_execmod
Host Name                     (removed)
Platform                      Linux (removed) 2.6.33.6-147.fc13.i686 #1
                              SMP Tue Jul 6 22:30:55 UTC 2010 i686 i686
Alert Count                   4
First Seen                    Thu 22 Jul 2010 12:09:06 AM CEST
Last Seen                     Thu 22 Jul 2010 12:09:11 AM CEST
Local ID                      72dff0a0-7d15-46e1-8b8c-038400b3977e
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1279750151.859:22626): avc:  denied  { execmod } for  pid=12150 comm="knotify4" path="/usr/lib/vlc/plugins/codec/librealvideo_plugin.so" dev=dm-6 ino=407014 scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=system_u:object_r:lib_t:s0 tclass=file

node=(removed) type=SYSCALL msg=audit(1279750151.859:22626): arch=40000003 syscall=125 success=no exit=-13 a0=4067000 a1=1b000 a2=5 a3=bfd789d0 items=0 ppid=1 pid=12150 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=73 comm="knotify4" exe="/usr/bin/knotify4" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  allow_execmod,knotify4,unconfined_t,lib_t,file,execmod
audit2allow suggests:

#============= unconfined_t ==============
#!!!! This avc can be allowed using the boolean 'allow_execmod'

allow unconfined_t lib_t:file execmod;