Summary:

SELinux is preventing /bin/hostname access to a leaked /dev/null file
descriptor.

Detailed Description:

[dnsdomainname has a permissive type (hostname_t). This access was not denied.]

SELinux denied access requested by the dnsdomainname command. It looks like this
is either a leaked descriptor or dnsdomainname output was redirected to a file
it is not allowed to access. Leaks usually can be ignored since SELinux is just
closing the leak and reporting the error. The application does not use the
descriptor, so it will run properly. If this is a redirection, you will not get
output in the /dev/null. You should generate a bugzilla on selinux-policy, and
it will get routed to the appropriate package. You can safely ignore this avc.

Allowing Access:

You can generate a local policy module to allow this access - see FAQ
(http://docs.fedoraproject.org/selinux-faq-fc5/#id2961385)

Additional Information:

Source Context                system_u:system_r:hostname_t:s0
Target Context                system_u:system_r:system_dbusd_t:s0-s0:c0.c1023
Target Objects                /dev/null [ fd ]
Source                        dnsdomainname
Source Path                   /bin/hostname
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           net-tools-1.60-99.fc12
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.32-84.fc12
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   leaks
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.31.12-174.2.3.fc12.i686.PAE #1 SMP Mon Jan 18
                              20:06:44 UTC 2010 i686 i686
Alert Count                   3
First Seen                    Sun 07 Feb 2010 15:35:58 GMT
Last Seen                     Sat 13 Feb 2010 17:37:04 GMT
Local ID                      0f735d96-cfeb-4569-9088-2393b63ae39f
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1266082624.28:46490): avc:  denied  { use } for  pid=3845 comm="dnsdomainname" path="/dev/null" dev=tmpfs ino=2273 scontext=system_u:system_r:hostname_t:s0 tcontext=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 tclass=fd

node=(removed) type=SYSCALL msg=audit(1266082624.28:46490): arch=40000003 syscall=11 success=yes exit=0 a0=842bed8 a1=844fb70 a2=842bfe0 a3=844fb70 items=0 ppid=3815 pid=3845 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dnsdomainname" exe="/bin/hostname" subj=system_u:system_r:hostname_t:s0 key=(null)



Hash String generated from  leaks,dnsdomainname,hostname_t,system_dbusd_t,fd,use
audit2allow suggests:

#============= hostname_t ==============
#!!!! This avc can be allowed using the boolean 'allow_domain_fd_use'

allow hostname_t system_dbusd_t:fd use;