Bug 670027

Summary: SELinux is preventing /usr/bin/deadbeef from using the 'execstack' accesses on a process.
Product: [Fedora] Fedora Reporter: gerfert
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 14CC: dwalsh, mgrepl
Target Milestone: ---Keywords: SELinux
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard: setroubleshoot_trace_hash:1f85040e67f70721d27c6724f915621f85afe875ccbee8cd8eae9a90bc3145ec
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-01-17 12:01:43 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 gerfert 2011-01-16 19:43:13 UTC
SELinux is preventing /usr/bin/deadbeef from using the 'execstack' accesses on a process.

*****  Plugin allow_execstack (53.1 confidence) suggests  ********************

If you do not think /usr/bin/deadbeef should need to map stack memory that is both writable and executable.
Then you need to report a bug. This is a potentially dangerous access.
Do
contact your security administrator and report this issue.

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

If you want to allow unconfined executables to make their stack executable.  This should never, ever be necessary. Probably indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla
Then you must tell SELinux about this by enabling the 'allow_execstack' boolean.
Do
setsebool -P allow_execstack 1

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

If you believe that deadbeef should be allowed execstack access on processes labeled unconfined_t 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 deadbeef-main /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                Unknown [ process ]
Source                        deadbeef-main
Source Path                   /usr/bin/deadbeef
Port                          <Неизвестно>
Host                          (removed)
Source RPM Packages           deadbeef-0.4.4-1.fc14
Target RPM Packages           
Policy RPM                    selinux-policy-3.9.7-19.fc14
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux rocketkitten 2.6.35.10-74.fc14.i686 #1 SMP
                              Thu Dec 23 16:17:40 UTC 2010 i686 i686
Alert Count                   5
First Seen                    Птн 14 Янв 2011 01:27:29
Last Seen                     Вск 16 Янв 2011 22:32:49
Local ID                      0bbf651d-03b3-47f8-bcc3-b09234321ae5

Raw Audit Messages
type=AVC msg=audit(1295206369.303:192): avc:  denied  { execstack } for  pid=28275 comm="deadbeef-main" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process

deadbeef-main,unconfined_t,unconfined_t,process,execstack
type=SYSCALL msg=audit(1295206369.303:192): arch=i386 syscall=mprotect success=yes exit=0 a0=bf978000 a1=1000 a2=1000007 a3=bf974a7c items=0 ppid=1 pid=28275 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm=deadbeef-main exe=/usr/bin/deadbeef subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)
deadbeef-main,unconfined_t,unconfined_t,process,execstack

#============= unconfined_t ==============
#!!!! This avc can be allowed using the boolean 'allow_execstack'

allow unconfined_t self:process execstack;

Comment 1 gerfert 2011-01-16 19:46:07 UTC
This alert appears every time DeaDBeeF is working.

Comment 2 Miroslav Grepl 2011-01-17 12:01:43 UTC

*** This bug has been marked as a duplicate of bug 652297 ***