gnome login broken.... "null" avcs...

Eamon Walsh ewalsh at tycho.nsa.gov
Thu Feb 28 20:21:10 UTC 2008


Tom London wrote:
> On Thu, Feb 28, 2008 at 10:06 AM, Daniel J Walsh <dwalsh at redhat.com> wrote:
>   
>> -----BEGIN PGP SIGNED MESSAGE-----
>>  Hash: SHA1
>>
>>
>>
>>  Tom London wrote:
>>  > On Thu, Feb 28, 2008 at 7:41 AM, Tom London <selinux at gmail.com> wrote:
>>  >> After applying today's selinux-policy* packages, gnome/gdm login
>>  >>  fails: gdmgreeter runs, but X quickly dies after enter password and
>>  >>  you're back to the greeter.
>>  >>
>>  >>  Booting up in permissive lets me log in.
>>  >>
>>  >>  Here are the borkages:
>>  >>
>>  >>
>>  >>  #============= mono_t ==============
>>  >>  allow mono_t xdm_xserver_t:x_device read;
>>  >>
>>  >>  #============= unconfined_execmem_t ==============
>>  >>  allow unconfined_execmem_t xdm_xserver_t:x_device read;
>>  >>
>>  >>  #============= unconfined_t ==============
>>  >>  allow unconfined_t mono_t:x_resource write;
>>  >>  allow unconfined_t unconfined_execmem_t:x_resource { write read };
>>  >>  allow unconfined_t unlabeled_t:x_drawable { destroy getattr };
>>  >>  [root at localhost ~]#
>>  >>

The "null" avc's are fixed in the upstream X server.  This is a bad 
security hook call in the GLX code and affects GLX programs such as compiz.

The unlabeled AVC is the result of a mislabeled program?



-- 
Eamon Walsh <ewalsh at tycho.nsa.gov>
National Security Agency




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