Bug 952211

Summary: SELinux is preventing wine-preloader from 'mmap_zero' accesses on the memprotect .
Product: [Fedora] Fedora Reporter: S Mac Aodha <sean>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 19CC: dominick.grift, dwalsh, mgrepl
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard: abrt_hash:7774f653e3da691a306c93c01e63776e9f463da61237237ad84821ef7dd40db8
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-04-16 08:40:26 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 S Mac Aodha 2013-04-15 11:35:46 UTC
Description of problem:
Tried to start a wine application
SELinux is preventing wine-preloader from 'mmap_zero' accesses on the memprotect .

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

If you do not think wine-preloader should need to mmap low memory in the kernel.
Then you may be under attack by a hacker, this is a very dangerous access.
Do
contact your security administrator and report this issue.

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

If you want to control the ability to mmap a low area of the address space, as configured by /proc/sys/kernel/mmap_min_addr.
Then you must tell SELinux about this by enabling the 'mmap_low_allowed' boolean.
You can read 'unconfined_selinux' man page for more details.
Do
setsebool -P mmap_low_allowed 1

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

If you believe that wine-preloader should be allowed mmap_zero access on the  memprotect by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep wine-preloader /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
                              023
Target Context                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
                              023
Target Objects                 [ memprotect ]
Source                        wine-preloader
Source Path                   wine-preloader
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.12.1-28.fc19.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux (removed) 3.9.0-0.rc6.git2.1.fc19.x86_64 #1
                              SMP Thu Apr 11 17:11:04 UTC 2013 x86_64 x86_64
Alert Count                   4
First Seen                    2013-04-15 12:22:17 IST
Last Seen                     2013-04-15 12:31:51 IST
Local ID                      94141a8e-ee66-4a96-a394-0faa0d45a3a0

Raw Audit Messages
type=AVC msg=audit(1366025511.374:2415): avc:  denied  { mmap_zero } for  pid=9250 comm="wine-preloader" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=memprotect


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

audit2allow

#============= unconfined_t ==============

#!!!! This avc is allowed in the current policy
allow unconfined_t self:memprotect mmap_zero;

audit2allow -R
require {
	type unconfined_t;
	class memprotect mmap_zero;
}

#============= unconfined_t ==============

#!!!! This avc is allowed in the current policy
allow unconfined_t self:memprotect mmap_zero;


Additional info:
hashmarkername: setroubleshoot
kernel:         3.9.0-0.rc6.git2.1.fc19.x86_64
type:           libreport

Potential duplicate: bug 665665

Comment 1 Miroslav Grepl 2013-04-16 08:40:26 UTC

*** This bug has been marked as a duplicate of bug 665665 ***