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Description of problem: I was doing a dnf update this morning and I got an SELinux error: SELinux is preventing systemd from create access on the unix_stream_socket Unknown. ***** Plugin catchall (100. confidence) suggests ************************** If you believe that systemd should be allowed create access on the Unknown unix_stream_socket 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: # ausearch -c 'systemd' --raw | audit2allow -M my-systemd # semodule -X 300 -i my-systemd.pp Additional Information: Source Context system_u:system_r:init_t:s0 Target Context system_u:system_r:unconfined_service_t:s0 Target Objects Unknown [ unix_stream_socket ] Source systemd Source Path systemd Port <Unknown> Host pmg-w541.usersys.redhat.com Source RPM Packages Target RPM Packages Policy RPM selinux-policy-3.13.1-227.fc26.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name pmg-w541.usersys.redhat.com Platform Linux pmg-w541.usersys.redhat.com 4.9.0-0.rc6.git2.1.fc26.x86_64 #1 SMP Wed Nov 23 16:51:44 UTC 2016 x86_64 x86_64 Alert Count 3 First Seen 2016-12-05 08:03:27 EST Last Seen 2016-12-05 08:03:27 EST Local ID ce150114-f43f-48c9-83c4-3ba656c85431 Raw Audit Messages type=AVC msg=audit(1480943007.761:19327): avc: denied { create } for pid=1 comm="systemd" scontext=system_u:system_r:init_t:s0 tcontext=system_u:system_r:unconfined_service_t:s0 tclass=unix_stream_socket permissive=0 Hash: systemd,init_t,unconfined_service_t,unix_stream_socket,create I did the ausearch and just lots of output like: [pgervase@pmg-w541 sat6]$ sudo ausearch -c 'systemd' --raw| tail -n 20 type=SERVICE_STOP msg=audit(1480942801.532:19285): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=sysstat-collect comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_START msg=audit(1480942801.672:19290): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=user@0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_STOP msg=audit(1480942802.070:19304): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=user@0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_START msg=audit(1480942819.730:19305): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=crond comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_STOP msg=audit(1480942819.730:19306): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=crond comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_START msg=audit(1480942819.742:19307): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=crond comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=AVC msg=audit(1480943007.446:19325): avc: denied { create } for pid=1 comm="systemd" scontext=system_u:system_r:init_t:s0 tcontext=system_u:system_r:unconfined_service_t:s0 tclass=unix_stream_socket permissive=0 type=AVC msg=audit(1480943007.608:19326): avc: denied { create } for pid=1 comm="systemd" scontext=system_u:system_r:init_t:s0 tcontext=system_u:system_r:unconfined_service_t:s0 tclass=unix_stream_socket permissive=0 type=AVC msg=audit(1480943007.761:19327): avc: denied { create } for pid=1 comm="systemd" scontext=system_u:system_r:init_t:s0 tcontext=system_u:system_r:unconfined_service_t:s0 tclass=unix_stream_socket permissive=0 type=SERVICE_START msg=audit(1480943025.902:19328): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=crond comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_STOP msg=audit(1480943025.902:19329): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=crond comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_START msg=audit(1480943025.912:19330): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=crond comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_START msg=audit(1480943080.067:19331): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=lvm2-lvmetad comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_START msg=audit(1480943101.356:19345): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=user@0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_STOP msg=audit(1480943101.945:19359): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=user@0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_START msg=audit(1480943108.951:19360): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=fprintd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_START msg=audit(1480943138.780:19373): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=fprintd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_STOP msg=audit(1480943138.780:19374): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=fprintd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_START msg=audit(1480943160.773:19380): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=dnf-makecache comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' type=SERVICE_STOP msg=audit(1480943160.773:19381): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=dnf-makecache comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' [pgervase@pmg-w541 sat6]$ sudo ausearch -c 'systemd' --raw| wc -l 16032 and piping it to audit2allow, my te file is $ cat my-systemd.te module my-systemd 1.0; require { type unconfined_service_t; type init_t; type httpd_tmp_t; class file unlink; class unix_stream_socket create; } #============= init_t ============== allow init_t httpd_tmp_t:file unlink; allow init_t unconfined_service_t:unix_stream_socket create; # ps -efZ | grep unconfined_service_t system_u:system_r:unconfined_service_t:s0 root 1701 1 0 Nov28 ? 00:00:03 /sbin/rngd -f Looking at the systemd files, # grep rngd /etc/systemd/* /usr/lib/systemd/* -R /etc/systemd/system/multi-user.target.wants/rngd.service:ExecStart=/sbin/rngd -f grep: /usr/lib/systemd/system/basic.target.wants/fedora-autorelabel-mark.service: No such file or directory grep: /usr/lib/systemd/system/basic.target.wants/fedora-autorelabel.service: No such file or directory /usr/lib/systemd/system/rngd.service:ExecStart=/sbin/rngd -f /usr/lib/systemd/system-preset/90-default.preset:enable rngd.service [root@pmg-w541 ~]# cat /usr/lib/systemd/system/rngd.service [Unit] Description=Hardware RNG Entropy Gatherer Daemon [Service] ExecStart=/sbin/rngd -f SuccessExitStatus=66 [Install] WantedBy=multi-user.target [root@pmg-w541 ~]# [root@pmg-w541 ~]# cat /usr/lib/systemd/system/rngd.service [Unit] Description=Hardware RNG Entropy Gatherer Daemon [Service] ExecStart=/sbin/rngd -f SuccessExitStatus=66 [Install] WantedBy=multi-user.target [root@pmg-w541 ~]# systemctl status rngd ● rngd.service - Hardware RNG Entropy Gatherer Daemon Loaded: loaded (/usr/lib/systemd/system/rngd.service; enabled; vendor preset: enabled) Active: active (running) since Mon 2016-11-28 20:31:38 EST; 6 days ago Main PID: 1701 (rngd) Tasks: 1 (limit: 4915) CGroup: /system.slice/rngd.service └─1701 /sbin/rngd -f Nov 28 20:31:38 pmg-w541.usersys.redhat.com systemd[1]: Started Hardware RNG Entropy Gatherer Daemon. Nov 28 20:31:38 pmg-w541.usersys.redhat.com rngd[1701]: /dev/hwrng: No such device [root@pmg-w541 ~]# [root@pmg-w541 sat6]# rpm -qf /sbin/rngd /usr/sbin/rngd rng-tools-5-8.fc26.x86_64 rng-tools-5-8.fc26.x86_64 [root@pmg-w541 sat6]# ls -lZ /sbin/rngd /usr/sbin/rngd -rwxr-xr-x. 1 root root system_u:object_r:bin_t:s0 24928 Oct 18 11:11 /sbin/rngd -rwxr-xr-x. 1 root root system_u:object_r:bin_t:s0 24928 Oct 18 11:11 /usr/sbin/rngd [root@pmg-w541 sat6]# md5sum /sbin/rngd /usr/sbin/rngd 1d8a14b08ca05477692a781f9b94e57e /sbin/rngd 1d8a14b08ca05477692a781f9b94e57e /usr/sbin/rngd [root@pmg-w541 sat6]# # ls -lZ /usr/sbin/rngd ; restorecon -Rv /usr/sbin/rngd ; ls -lZ /usr/sbin/rngd -rwxr-xr-x. 1 root root system_u:object_r:bin_t:s0 24928 Oct 18 11:11 /usr/sbin/rngd restorecon reset /usr/sbin/rngd context system_u:object_r:bin_t:s0->system_u:object_r:rngd_exec_t:s0 -rwxr-xr-x. 1 root root system_u:object_r:rngd_exec_t:s0 24928 Oct 18 11:11 /usr/sbin/rngd but systemd is calling /sbin/rngd, not /usr/sbin/rngd. I tried restorecon there and it stayed the same [root@pmg-w541 sat6]# ls -lZ /sbin/rngd ; restorecon -Rv /sbin/rngd ; ls -lZ /sbin/rngd -rwxr-xr-x. 1 root root system_u:object_r:rngd_exec_t:s0 24928 Oct 18 11:11 /sbin/rngd -rwxr-xr-x. 1 root root system_u:object_r:rngd_exec_t:s0 24928 Oct 18 11:11 /sbin/rngd Version-Release number of selected component (if applicable): rng-tools-5-8.fc26.x86_64 selinux-policy-targeted-3.13.1-227.fc26.noarch selinux-policy-3.13.1-227.fc26.noarch How reproducible: Not sure Steps to Reproduce: 1. Not sure... this is the only time I've noticed this, but it's possibly happened other times and I missed the notice. 2. 3. Actual results: SELinux messages as shown above Expected results: No SELinux messages Additional info: Why aren't /sbin/rngd and /usr/sbin/rngd symlink or if no need to symlink, why have two of the same files /sbin/rngd and /usr/sbin/rngd?
If /sbin/rngd is rngd_exec_t then this should work init_t @ rngd_exec_t --> rngd_t and allow init_t daemon : unix_stream_socket { ioctl read write create getattr setattr lock append bind connect listen accept getopt setopt shutdown } ;
This bug appears to have been reported against 'rawhide' during the Fedora 26 development cycle. Changing version to '26'.
This message is a reminder that Fedora 26 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 26. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '26'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 26 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete.
Fedora 26 changed to end-of-life (EOL) status on 2018-05-29. Fedora 26 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.