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Bug 2231861 - SELinux Policy sets selinuxuser_execmod=off on ppc64le
Summary: SELinux Policy sets selinuxuser_execmod=off on ppc64le
Keywords:
Status: CLOSED MIGRATED
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: selinux-policy
Version: 9.2
Hardware: ppc64le
OS: Linux
unspecified
high
Target Milestone: rc
: ---
Assignee: Daniel Walsh
QA Contact: BaseOS QE Security Team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-08-14 13:30 UTC by Jeremy Poulin
Modified: 2023-09-19 17:00 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2023-09-19 17:00:05 UTC
Type: Bug
Target Upstream Version:
Embargoed:
pm-rhel: mirror+


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 2230462 0 unspecified CLOSED avc: denied { execmod } for pid=335139 comm="sh" path="/bin/sh" dev="dm-4" ino=138505864 scontext=system_u:system_r:s... 2024-01-10 04:29:34 UTC
Red Hat Issue Tracker   RHEL-5171 0 None Migrated None 2023-09-19 16:59:59 UTC
Red Hat Issue Tracker RHELPLAN-165747 0 None None None 2023-09-19 16:58:19 UTC

Description Jeremy Poulin 2023-08-14 13:30:00 UTC
Description of problem:
selinux-policy seems to set selinuxuser_execmod=off by default on Power systems

This results in issues when running OpenShift with privileged pods.

sh-5.1# rpm -q container-selinux
container-selinux-2.219.0-1.rhaos4.13.el9.noarch
sh-5.1# ausearch -m AVC,USER_AVC,SELINUX_ERR,USER_SELINUX_ERR -ts recent -i | audit2allow


#============= spc_t ==============

#!!!! This avc can be allowed using the boolean 'selinuxuser_execmod'
allow spc_t container_ro_file_t:file execmod;

See https://bugzilla.redhat.com/show_bug.cgi?id=2230462 for the error in the package consumed by OpenShift.

Version-Release number of selected component (if applicable):


How reproducible:
We've been running openshift-tests on Power systems with the latest builds of RHCOS.

Steps to Reproduce:
1. Deploy openshift
2. Run openShift tests
3. Audit results for selinux denials

Actual results:

sh-5.1# ausearch -m AVC,USER_AVC,SELINUX_ERR,USER_SELINUX_ERR -ts recent -i | audit2allow


#============= spc_t ==============

#!!!! This avc can be allowed using the boolean 'selinuxuser_execmod'
allow spc_t container_ro_file_t:file execmod;

Expected results:
No errors


Additional info:
This seems only to be set off on Power. Other architectures are able to run privileged containers without issue.

Comment 1 Jeremy Poulin 2023-08-14 13:35:03 UTC
As an aside - Dan provided a full list of differences between the architecture defaults (between x86_64 and ppc64le)

x86 settings
selinuxuser_direct_dri_enabled --> on
selinuxuser_execheap --> off
selinuxuser_execmod --> on
selinuxuser_execstack --> on
selinuxuser_mysql_connect_enabled --> off
selinuxuser_ping --> on
selinuxuser_postgresql_connect_enabled --> off
selinuxuser_rw_noexattrfile --> on
selinuxuser_share_music --> off
selinuxuser_tcp_server --> off
selinuxuser_udp_server --> off
selinuxuser_use_ssh_chroot --> off

(See https://redhat-internal.slack.com/archives/C017UFPQA4X/p1692019449004529?thread_ts=1690991302.943759&cid=C017UFPQA4X)

Not sure if any of these should be set for power as well.

Comment 2 RHEL Program Management 2023-09-19 16:58:31 UTC
Issue migration from Bugzilla to Jira is in process at this time. This will be the last message in Jira copied from the Bugzilla bug.

Comment 3 RHEL Program Management 2023-09-19 17:00:05 UTC
This BZ has been automatically migrated to the issues.redhat.com Red Hat Issue Tracker. All future work related to this report will be managed there.

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