Bug 486897

Description of problem:


Summary:

SELinux is preventing gnome-sound-pro from loading
/usr/lib/i686/libavutil.so.49.10.0 which requires text relocation.

Detailed Description:

The gnome-sound-pro application attempted to load
/usr/lib/i686/libavutil.so.49.10.0 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/i686/libavutil.so.49.10.0 to use relocation as a workaround, until the
library is fixed. Please file a bug report
(http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package.

Allowing Access:

If you trust /usr/lib/i686/libavutil.so.49.10.0 to run correctly, you can change
the file context to textrel_shlib_t. "chcon -t textrel_shlib_t
'/usr/lib/i686/libavutil.so.49.10.0'" 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/i686/libavutil.so.49.10.0'"

Fix Command:

chcon -t textrel_shlib_t '/usr/lib/i686/libavutil.so.49.10.0'

Additional Information:

Source Context                unconfined_u:unconfined_r:unconfined_t:s0
Target Context                system_u:object_r:lib_t:s0
Target Objects                /usr/lib/i686/libavutil.so.49.10.0 [ file ]
Source                        gnome-settings-
Source Path                   /usr/libexec/gnome-settings-daemon
Port                          <Unknown>
Host                          khorlia.zeff.us
Source RPM Packages           control-center-2.24.0.1-9.fc10
Target RPM Packages           ffmpeg-libs-0.4.9-0.54.20080908.fc10
Policy RPM                    selinux-policy-3.5.13-18.fc10
Selinux Enabled               True
Policy Type                   targeted
MLS Enabled                   True
Enforcing Mode                Enforcing
Plugin Name                   allow_execmod
Host Name                     khorlia.zeff.us
Platform                      Linux khorlia.zeff.us 2.6.27.15-170.2.24.fc10.i686
                              #1 SMP Wed Feb 11 23:58:12 EST 2009 i686 i686
Alert Count                   3
First Seen                    Sun 22 Feb 2009 05:17:16 PM PST
Last Seen                     Sun 22 Feb 2009 05:41:18 PM PST
Local ID                      4b3cd259-8d74-4223-add5-0178015f1b94
Line Numbers                  

Raw Audit Messages            

node=khorlia.zeff.us type=AVC msg=audit(1235353278.567:140): avc:  denied  { execmod } for  pid=3554 comm="gnome-sound-pro" path="/usr/lib/i686/libavutil.so.49.10.0" dev=sda6 ino=1485443 scontext=unconfined_u:unconfined_r:unconfined_t:s0 tcontext=system_u:object_r:lib_t:s0 tclass=file

node=khorlia.zeff.us type=SYSCALL msg=audit(1235353278.567:140): arch=40000003 syscall=125 success=no exit=-13 a0=cd2000 a1=9000 a2=5 a3=bfb60910 items=0 ppid=3553 pid=3554 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="gnome-sound-pro" exe="/usr/bin/gnome-sound-properties" subj=unconfined_u:unconfined_r:unconfined_t:s0 key=(null)





Version-Release number of selected component (if applicable):


How reproducible:

Only tried it once, but by the SELinux error, it should happen every time.

Steps to Reproduce:
1.Go to System
2.Preferences
3.Hardware
4.Sound
5.Up pops the error.
  
Actual results:


Expected results:


Additional info: