Bug 980608 - SELinux is preventing /usr/bin/screen from using the 'sigchld' accesses on a process.
SELinux is preventing /usr/bin/screen from using the 'sigchld' accesses on a ...
Product: Fedora
Classification: Fedora
Component: selinux-policy (Show other bugs)
x86_64 Unspecified
unspecified Severity unspecified
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Assigned To: Miroslav Grepl
Fedora Extras Quality Assurance
Depends On:
  Show dependency treegraph
Reported: 2013-07-02 16:42 EDT by Casey Dahlin
Modified: 2014-06-18 04:47 EDT (History)
4 users (show)

See Also:
Fixed In Version: selinux-policy-3.12.1-59.fc19
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2013-07-06 21:33:14 EDT
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Regression: ---
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Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Casey Dahlin 2013-07-02 16:42:49 EDT
Description of problem:
Using screen normally. Didn't correlate it to any particular action.
SELinux is preventing /usr/bin/screen from using the 'sigchld' accesses on a process.

*****  Plugin catchall (100. confidence) suggests  ***************************

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

Additional Information:
Source Context                staff_u:staff_r:irc_t:s0-s0:c0.c1023
Target Context                staff_u:staff_r:staff_screen_t:s0-s0:c0.c1023
Target Objects                 [ process ]
Source                        screen
Source Path                   /usr/bin/screen
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           screen-4.1.0-0.14.20120314git3c2946.fc19.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.12.1-54.fc19.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.9.8-300.fc19.x86_64 #1 SMP Thu
                              Jun 27 19:24:23 UTC 2013 x86_64 x86_64
Alert Count                   1
First Seen                    2013-07-02 16:38:39 EDT
Last Seen                     2013-07-02 16:38:39 EDT
Local ID                      92dc3fb2-e13c-4121-9751-8eee2b959f35

Raw Audit Messages
type=AVC msg=audit(1372797519.46:446): avc:  denied  { sigchld } for  pid=2702 comm="screen" scontext=staff_u:staff_r:irc_t:s0-s0:c0.c1023 tcontext=staff_u:staff_r:staff_screen_t:s0-s0:c0.c1023 tclass=process

type=SYSCALL msg=audit(1372797519.46:446): arch=x86_64 syscall=wait4 success=yes exit=0 a0=ffffffffffffffff a1=7fff1618ba30 a2=3 a3=0 items=0 ppid=2358 pid=2702 auid=1000 uid=1000 gid=1000 euid=1000 suid=1000 fsuid=1000 egid=84 sgid=84 fsgid=84 ses=1 tty=(none) comm=screen exe=/usr/bin/screen subj=staff_u:staff_r:staff_screen_t:s0-s0:c0.c1023 key=(null)

Hash: screen,irc_t,staff_screen_t,process,sigchld

Additional info:
reporter:       libreport-2.1.5
hashmarkername: setroubleshoot
kernel:         3.9.8-300.fc19.x86_64
type:           libreport
Comment 1 Daniel Walsh 2013-07-03 07:50:00 EDT

Fix this problem in git.
Comment 2 Fedora Update System 2013-07-03 15:50:13 EDT
selinux-policy-3.12.1-59.fc19 has been submitted as an update for Fedora 19.
Comment 3 Fedora Update System 2013-07-04 22:13:57 EDT
Package selinux-policy-3.12.1-59.fc19:
* should fix your issue,
* was pushed to the Fedora 19 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing selinux-policy-3.12.1-59.fc19'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).
Comment 4 Fedora Update System 2013-07-06 21:33:14 EDT
selinux-policy-3.12.1-59.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

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