Bug 912175

Summary: SELinux is preventing wine-preloader from 'mmap_zero' accesses on the memprotect .
Product: [Fedora] Fedora Reporter: Claudiomar Rodrigues <claudiomar.costa>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED CANTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 17CC: antonio.montagnani, ar1st0craf7, dave, dominick.grift, dwalsh, eparis, iman_fergi, mgrepl, mrblack, sheepdestroyer, steve
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard: abrt_hash:a39935949b5a137b9a65999862db63ad8f271ca1c793f01042880022f9ee6c69
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-03-19 19:15:09 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Claudiomar Rodrigues 2013-02-18 02:51:25 UTC 
Description of problem:
SELinux is preventing wine-preloader from 'mmap_zero' accesses on the memprotect .

*****  Plugin mmap_zero (53.1 confidence) suggests  **************************

If você não acredita que o wine-preloader deva precisar mmap memória baixa no kernel.
Then você pode estar sob ataque de um hacker, isto é um acesso muito perigoso.
Do
contate seu administrador de segurança e reporte este problema.

*****  Plugin catchall_boolean (42.6 confidence) suggests  *******************

If você deseja mmap_low_allowed
Then you must tell SELinux about this by enabling the 'mmap_low_allowed' boolean.You can read 'initrc_selinux' man page for more details.
Do
setsebool -P mmap_low_allowed 1

*****  Plugin catchall (5.76 confidence) suggests  ***************************

If você acredita que o wine-preloader deva ser permitido acesso de mmap_zero em  memprotect  por default.
Then você precisa reportar este como um erro.
Você pode gerar um módulo de política local para permitir este acesso.
Do
permitir este acesso agora executando:
# grep wine-preloader /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:initrc_t:s0
Target Context                system_u:system_r:initrc_t:s0
Target Objects                 [ memprotect ]
Source                        wine-preloader
Source Path                   wine-preloader
Port                          <Desconhecido>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.10.0-167.fc17.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux (removed) 3.7.6-102.fc17.x86_64 #1 SMP Mon
                              Feb 4 17:40:25 UTC 2013 x86_64 x86_64
Alert Count                   6
First Seen                    2013-02-14 19:00:24 BRST
Last Seen                     2013-02-17 23:47:57 BRT
Local ID                      b0123ed1-a677-4f74-b8f0-b1d683a88aed

Raw Audit Messages
type=AVC msg=audit(1361155677.770:74): avc:  denied  { mmap_zero } for  pid=1605 comm="wine-preloader" scontext=system_u:system_r:initrc_t:s0 tcontext=system_u:system_r:initrc_t:s0 tclass=memprotect


Hash: wine-preloader,initrc_t,initrc_t,memprotect,mmap_zero

audit2allow

#============= initrc_t ==============
#!!!! This avc can be allowed using the boolean 'mmap_low_allowed'

allow initrc_t self:memprotect mmap_zero;

audit2allow -R

#============= initrc_t ==============
#!!!! This avc can be allowed using the boolean 'mmap_low_allowed'

allow initrc_t self:memprotect mmap_zero;


Additional info:
hashmarkername: setroubleshoot
kernel:         3.7.6-102.fc17.x86_64
type:           libreport
Comment 1 Miroslav Grepl 2013-02-19 09:53:20 UTC 
*** Bug 912471 has been marked as a duplicate of this bug. ***
Comment 2 Iman 2013-03-19 15:08:44 UTC 
i don't know that for what but I thing it's because the team viewer application.

Package: (null)
OS Release: Fedora release 18 (Spherical Cow)
Comment 3 Daniel Walsh 2013-03-19 19:15:09 UTC 
Did the application work?  If yes you can add a dontaudit rule, if no you need to turn on the boolean mmap_low_allowed.

grep mmap_zero /var/log/audit/audit.log | audit2allow -DM mymmap
semodule -i mymmap.pp

or 

setsebool -P mmap_low_allowed 1
Comment 4 sheepdestroyer 2013-04-02 06:04:17 UTC 
i got the same problem, caused by  the daemon teamviewerd i suspect.
Comment 5 Miroslav Grepl 2013-04-09 08:23:56 UTC 
Let's do steps from the comment #3.
Comment 6 Iman 2013-04-09 12:12:01 UTC 
(In reply to comment #3)
> Did the application work?  If yes you can add a dontaudit rule, if no you
> need to turn on the boolean mmap_low_allowed.
> 
> grep mmap_zero /var/log/audit/audit.log | audit2allow -DM mymmap
> semodule -i mymmap.pp
> 
> or 
> 
> setsebool -P mmap_low_allowed 1

yes the application work but i can't understand your answer...