Bug 437663 – Dbus isn't allowed to look at NFS-mounted home directories

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Bug 437663 - Dbus isn't allowed to look at NFS-mounted home directories

Summary:	Dbus isn't allowed to look at NFS-mounted home directories

Status:	CLOSED CURRENTRELEASE

Aliases:	None

Product:	Fedora
Classification:	Fedora
Component:	selinux-policy-targeted (Show other bugs)
Sub Component:
Version:	8
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Daniel Walsh
QA Contact:	Ben Levenson
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Reported:	2008-03-15 18:25 EDT by Göran Uddeborg
Modified:	2008-11-10 08:40 EST (History)
CC List:	0 users

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Fixed In Version:
Doc Type:	Bug Fix
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Last Closed:	2008-11-10 08:40:05 EST
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Description Göran Uddeborg 2008-03-15 18:25:51 EDT

Description of problem:
With home directories mounted via NFS, I get these errors:

Mar 15 23:01:59 freddi kernel: audit(1205618519.328:7): avc:  denied  { search }
for  pid=2500 comm="dbus-daemon" name="" dev=0:15 ino=5963786
scontext=system_u:system_r:system_dbusd_t:s0 tcontext=system_u:object_r:nfs_t:s0
tclass=dir

I get these errors although I do have the boolean to allow NFS home directories set:

freddi$ getsebool use_nfs_home_dirs
use_nfs_home_dirs --> on

freddi$ rpm -q selinux-policy selinux-policy-targeted
selinux-policy-3.0.8-93.fc8
selinux-policy-targeted-3.0.8-93.fc8

Comment 1 Daniel Walsh 2008-03-17 09:13:51 EDT

Any idea why the systembus would be looking in your home directories? 

You can allow this for now by executing 

# audit2allow -M mypol -i /var/log/audit/audit.log 
# semodule -i mypol.pp

Will be dontaudited in selinux-policy-3.0.8-94.fc8

Comment 2 Göran Uddeborg 2008-03-17 10:57:32 EDT

In order to answer your question, I have investigated this a bit further.  It
turns out tge systembus isn't actually looking in the home directories, it's
looking at /usr/local.  Which I also have NFS mounted on this host.  So while
nothing what I wrote in comment 0 is incorrect, it is misleading.

I still don't know why the systembus looks at /usr/local, but it seems to be a
reasonable thing for it to do.  So maybe it makes more sense for me to allow
this locally, rather than for the default policy to hide it.  I guess
NFS-mounted /usr/local isn't something that is expected by the default policy.

Sorry for the noise.

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