Bug 1285019
| Summary: | SELinux is preventing systemd-logind from 'create' accesses on the file .#nologinDUxFTb. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Vinicius Reis <angiolucci> |
| Component: | selinux-policy | Assignee: | Lukas Vrabec <lvrabec> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | high | ||
| Version: | 23 | CC: | adalsaady, dfulgido, dominick.grift, dwalsh, lvrabec, mauricio.pronet, mgrepl, plautrba, stefw, wolfgang.rupprecht |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Unspecified | ||
| Whiteboard: | abrt_hash:41c659030036e40b5782668201cc32115126be8a86c424e9b892e258ed7b1202;VARIANT_ID=workstation; | ||
| Fixed In Version: | selinux-policy-3.13.1-158.9.fc23 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2016-03-05 06:22:30 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 of problem: shutdown -r Version-Release number of selected component: selinux-policy-3.13.1-155.fc23.noarch Additional info: reporter: libreport-2.6.3 hashmarkername: setroubleshoot kernel: 4.2.6-301.fc23.x86_64 type: libreport We see this sporadically in the Cockpit integration tests. For example: https://fedorapeople.org/groups/cockpit/logs/pull-3327-9b09bfed-fedora-23/log.html Cockpit is now working around this bug in its integration tests by ignoring the AVC: https://github.com/cockpit-project/cockpit/pull/3328 Currently systemd-logind is only allowed to create nologin file in /run, We should open it up transition on any file. There is github discussion about this issue. The point is it is about a generic transition in /run vs. filename transitions which can not be applied here because of .#nologinDUxFTb. There are systemd fixes in systemd code to label these files correctly according the policy context. We can try to add a generic transition to rawhide to see if it works correctly. Or get systemd-logind to claim a directory /run/logind/ or something I like idea to store this in /run/logind or /run/systemd/. This should be best for us. Mirek, could you attach link with the discussion? Thank you. Lets have this bug opened and have a discussion in https://github.com/systemd/systemd/pull/2100 Basically it will be fixed by systemd code changes. If we find a better solution we will remove these systemd code changes. As we discussed it with Dominick if we get all proper confinements we can revert systemd SELinux code changes. *** Bug 1305567 has been marked as a duplicate of this bug. *** To be honest, I'm not sure what is solution here after github discussion. Can I make generic transition that systemd_logind_t can create any file in /run labeled as system_logind_var_run_t ? Mirek, What is your opinion? Yes, I would go with this suggested solution from Dominick here. Yes, I also agree with this solution. Thank you. selinux-policy-3.13.1-158.9.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-ffbae3a870 selinux-policy-3.13.1-158.9.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-ffbae3a870 selinux-policy-3.13.1-158.9.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report. *** Bug 1315477 has been marked as a duplicate of this bug. *** This is happening again on Fedora 24 with different AVC's, but essentially the same problem: https://bugzilla.redhat.com/show_bug.cgi?id=1317389 |
Description of problem: Typed on a terminal window "sudo shutdown -h 15:00", while SELinux is in Enforcing mode. selinux-policy-3.13.1-155.fc23.noarch SELinux is preventing systemd-logind from 'create' accesses on the file .#nologinDUxFTb. ***** Plugin catchall (100. confidence) suggests ************************** If você acredita que o systemd-logind deva ser permitido acesso de create em .#nologinDUxFTb file por default. Then você precisa reportar este como um erro. Você pode gerar um módulo de política local para permitir este acesso. Do permitir este acesso agora executando: # grep systemd-logind /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp Additional Information: Source Context system_u:system_r:systemd_logind_t:s0 Target Context system_u:object_r:var_run_t:s0 Target Objects .#nologinDUxFTb [ file ] Source systemd-logind Source Path systemd-logind Port <Unknown> Host (removed) Source RPM Packages Target RPM Packages Policy RPM selinux-policy-3.13.1-155.fc23.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 4.2.6-300.fc23.x86_64 #1 SMP Tue Nov 10 19:32:21 UTC 2015 x86_64 x86_64 Alert Count 6 First Seen 2015-11-22 05:25:00 BRST Last Seen 2015-11-24 14:55:16 BRST Local ID 1ad8b651-3406-4c9a-a8b1-426d8f8c7259 Raw Audit Messages type=AVC msg=audit(1448384116.310:594): avc: denied { create } for pid=740 comm="systemd-logind" name=".#nologinDUxFTb" scontext=system_u:system_r:systemd_logind_t:s0 tcontext=system_u:object_r:var_run_t:s0 tclass=file permissive=0 Hash: systemd-logind,systemd_logind_t,var_run_t,file,create Version-Release number of selected component: selinux-policy-3.13.1-155.fc23.noarch Additional info: reporter: libreport-2.6.3 hashmarkername: setroubleshoot kernel: 4.2.6-300.fc23.x86_64 type: libreport