Bug 548660

Summary:

SELinux is preventing gdm-session-wor (xdm_t) "write" to
/home/rob/.xsession-errors (user_home_t).

Detailed Description:

SELinux denied access requested by gdm-session-wor. /home/rob/.xsession-errors
may be a mislabeled. /home/rob/.xsession-errors default SELinux type is
xdm_home_t, but its current type is user_home_t. Changing this file back to the
default type, may fix your problem.

File contexts can be assigned to a file in the following ways.

  * Files created in a directory receive the file context of the parent
    directory by default.
  * The SELinux policy might override the default label inherited from the
    parent directory by specifying a process running in context A which creates
    a file in a directory labeled B will instead create the file with label C.
    An example of this would be the dhcp client running with the dhclient_t type
    and creates a file in the directory /etc. This file would normally receive
    the etc_t type due to parental inheritance but instead the file is labeled
    with the net_conf_t type because the SELinux policy specifies this.
  * Users can change the file context on a file using tools such as chcon, or
    restorecon.

This file could have been mislabeled either by user error, or if an normally
confined application was run under the wrong domain.

However, this might also indicate a bug in SELinux because the file should not
have been labeled with this type.

If you believe this is a bug, please file a bug report
(http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package.

Allowing Access:

You can restore the default system context to this file by executing the
restorecon command. restorecon '/home/rob/.xsession-errors', if this file is a
directory, you can recursively restore using restorecon -R
'/home/rob/.xsession-errors'.

Fix Command:

restorecon '/home/rob/.xsession-errors'

Additional Information:

Source Context                system_u:system_r:xdm_t:s0-s0:c0.c1023
Target Context                system_u:object_r:user_home_t:s0
Target Objects                /home/rob/.xsession-errors [ file ]
Source                        gdm-session-wor
Source Path                   /usr/libexec/gdm-session-worker
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           gdm-2.26.1-13.fc11
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.12-86.fc11
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   restorecon
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.30.9-96.fc11.x86_64 #1 SMP Wed Nov 4 00:02:04
                              EST 2009 x86_64 x86_64
Alert Count                   26
First Seen                    Sun 12 Jul 2009 11:27:15 AM MDT
Last Seen                     Sun 15 Nov 2009 06:25:37 PM MST
Local ID                      35252257-4a74-49de-b3a0-971b687f20c6
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1258334737.586:34): avc:  denied  { write } for  pid=4304 comm="gdm-session-wor" name=".xsession-errors" dev=dm-1 ino=4129444 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:user_home_t:s0 tclass=file

node=(removed) type=SYSCALL msg=audit(1258334737.586:34): arch=c000003e syscall=77 success=no exit=-13 a0=9 a1=0 a2=7fff1b523b50 a3=7fff1b523890 items=0 ppid=4267 pid=4304 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="gdm-session-wor" exe="/usr/libexec/gdm-session-worker" subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  selinux-policy-3.6.12-86.fc11,restorecon,gdm-session-wor,xdm_t,user_home_t,file,write
audit2allow suggests:

#============= xdm_t ==============
allow xdm_t user_home_t:file write;