updpwd AVC

[Tony Molloy]

On Tuesday 27 September 2011 19:17:17 Daniel J Walsh wrote:
> On 09/27/2011 11:26 AM, Tony Molloy wrote:
> > On Monday 26 September 2011 22:22:31 Dominick Grift wrote:
> >> On Mon, 2011-09-26 at 15:00 +0100, Tony Molloy wrote:
> >>> Hi,
> >>> 
> >>> On a fully updated CentOS 5.7 box I get the following AVC

> >>> SELinux is preventing unix_update (updpwd_t) "getattr" to /
> >>> (fs_t).
> >>> 
> >>> Raw Audit Message
> >>> 
> >>> host=a.b.c.d type=AVC msg=audit(1317043134.620:3620): avc:
> >>> denied
> >>> 
> >>> { getattr } for pid=21354 comm="unix_update" name="/" dev=sda5
> >>> 
> >>> ino=2 scontext=system_u:system_r:updpwd_t:s0
> >>> 
> >>> tcontext=system_u:object_r:fs_t:s0 tclass=filesystem
> >>> 
> >>> 
> Probably has to do with the way the mount table is setup on this
> machine versus other machines.

Now I've just noticed some other SElinux problems on this machine.


Unusual System Events
=-=-=-=-=-=-=-=-=-=-=
Sep 24 13:25:24 garryowen ssh: 
/etc/selinux/targeted/contexts/files/file_contexts: Multiple same 
specifications for /home/[^/]*/.+. 
Sep 24 13:25:24 garryowen ssh: 
/etc/selinux/targeted/contexts/files/file_contexts: Multiple same 
specifications for /home/[^/]*/.virtinst(/.*)?. 

.....


Now some time ago I moved some test mail accounts on this machine from 
/users to /home and ran genhomedircon.

There is a file in /etc/selinux/targeted/contexts/files/ called 
file_contexts.homedirs, generated by genhomedircon, which contains 
context information for /home.

Could this multiple definitions be the root cause of the problem

Should I remove this file and autorelabel the entire filesystem again.

Thanks,

Tony
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