Bug 2014801

Summary: SELinux is preventing systemd-logind from 'destroy' accesses on the shared memory labeled unconfined_t.
Product: [Fedora] Fedora Reporter: krinkodot22
Component: selinux-policyAssignee: Zdenek Pytela <zpytela>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: low    
Version: 35CC: dwalsh, gene, grepl.miroslav, lvrabec, mmalik, omosnace, vmojzis, zpytela
Target Milestone: ---Keywords: Triaged
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard: abrt_hash:ba1aa9a9f4bde10896b0e7c9ff1432b4003c65d7cca8ac2d93c87fd90d143409;VARIANT_ID=workstation;
Fixed In Version: selinux-policy-35.5-1.fc35 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-11-07 01:28:22 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 krinkodot22 2021-10-16 22:21:15 UTC
Description of problem:
Logged out of a session & logged into a different session that was already running.
SELinux is preventing systemd-logind from 'destroy' accesses on the shared memory labeled unconfined_t.

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

If you believe that systemd-logind should be allowed destroy access on shm 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:
# ausearch -c 'systemd-logind' --raw | audit2allow -M my-systemdlogind
# semodule -X 300 -i my-systemdlogind.pp

Additional Information:
Source Context                system_u:system_r:systemd_logind_t:s0
Target Context                unconfined_u:unconfined_r:unconfined_t:s0-
                              s0:c0.c1023
Target Objects                Unknown [ shm ]
Source                        systemd-logind
Source Path                   systemd-logind
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
SELinux Policy RPM            selinux-policy-targeted-35.1-1.fc35.noarch
Local Policy RPM              selinux-policy-targeted-35.1-1.fc35.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 5.14.12-300.fc35.x86_64 #1 SMP Wed
                              Oct 13 14:16:09 UTC 2021 x86_64 x86_64
Alert Count                   11
First Seen                    2021-09-08 15:33:14 EDT
Last Seen                     2021-10-16 17:27:49 EDT
Local ID                      51fc6552-e3e1-4f99-8e0b-ef7b5fc5951d

Raw Audit Messages
type=AVC msg=audit(1634419669.965:736): avc:  denied  { destroy } for  pid=1296 comm="systemd-logind" key=1361445075  scontext=system_u:system_r:systemd_logind_t:s0 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=shm permissive=0


Hash: systemd-logind,systemd_logind_t,unconfined_t,shm,destroy

Version-Release number of selected component:
selinux-policy-targeted-35.1-1.fc35.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.15.2
hashmarkername: setroubleshoot
kernel:         5.14.12-300.fc35.x86_64
type:           libreport

Potential duplicate: bug 1211852

Comment 1 gene 2021-11-03 13:13:51 UTC
Similar problem has been detected:

Last night I upgraded from Fedora 34 to 35. Today while logged into a Wayland session I connected my external monitors. I then logged out and back in under X11. When I did SELinux troubleshooter showed me this issue.

hashmarkername: setroubleshoot
kernel:         5.14.14-300.fc35.x86_64
package:        selinux-policy-targeted-35.3-1.20211019git94970fc.fc35.noarch
reason:         SELinux is preventing systemd-logind from 'destroy' accesses on the shared memory labeled unconfined_t.
type:           libreport

Comment 2 Zdenek Pytela 2021-11-03 20:24:44 UTC
I've submitted a Fedora PR to address the issue:
https://github.com/fedora-selinux/selinux-policy/pull/934

Comment 3 Fedora Update System 2021-11-04 19:33:15 UTC
FEDORA-2021-64eb16151d has been submitted as an update to Fedora 35. https://bodhi.fedoraproject.org/updates/FEDORA-2021-64eb16151d

Comment 4 Fedora Update System 2021-11-05 01:22:20 UTC
FEDORA-2021-64eb16151d has been pushed to the Fedora 35 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-64eb16151d`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-64eb16151d

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2021-11-07 01:28:22 UTC
FEDORA-2021-64eb16151d has been pushed to the Fedora 35 stable repository.
If problem still persists, please make note of it in this bug report.