Bug 1759561
| Summary: | SELinux is preventing numad from using the 'signull' accesses on a process. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | jcos |
| Component: | selinux-policy | Assignee: | Patrik Koncity <pkoncity> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 30 | CC: | dwalsh, jcos, lvrabec, mgrepl, plautrba, zpytela |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Unspecified | ||
| Whiteboard: | abrt_hash:77486dc8cad97a42962caf3caae702f9edaaeab76c5ddf75384c6bc64ee1520d;VARIANT_ID=workstation; | ||
| Fixed In Version: | selinux-policy-3.14.3-52.fc30 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-11-17 01:13:00 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: | |||
I actually ended up getting several more SELinux denials due to numad several minutes later:
type=AVC msg=audit(1570543013.90:621): avc: denied { sys_ptrace } for pid=13559 comm="numad" capability=19 scontext=system_u:system_r:numad_t:s0 tcontext=system_u:system_r:numad_t:s0 tclass=cap_userns permissive=0
type=AVC msg=audit(1570543028.105:634): avc: denied { kill } for pid=13559 comm="numad" capability=5 scontext=system_u:system_r:numad_t:s0 tcontext=system_u:system_r:numad_t:s0 tclass=cap_userns permissive=0
type=AVC msg=audit(1570543058.151:732): avc: denied { sys_nice } for pid=13559 comm="numad" capability=23 scontext=system_u:system_r:numad_t:s0 tcontext=system_u:system_r:numad_t:s0 tclass=cap_userns permissive=0
type=AVC msg=audit(1570543058.152:733): avc: denied { sys_nice } for pid=13559 comm="numad" capability=23 scontext=system_u:system_r:numad_t:s0 tcontext=system_u:system_r:numad_t:s0 tclass=capability permissive=0
commit bd635ce68d153487a98e9d725a4e895346987f9f (HEAD -> rawhide, origin/rawhide, origin/HEAD)
Author: Patrik Koncity <pkoncity>
Date: Fri Oct 11 16:41:47 2019 +0200
Update numad policy to allow signull, kill, nice and trace processes
Numad is user-level daemon that provides placement advice and process
management for efficient use of CPUs and memory on systems with NUMA topology
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1759561
Allow capability sys_nice set real-time scheduling policies for calling process,
and set scheduling policies and priorities for arbitrary processes
Allow capability sys_ptrace to trace arbitrary processes
Allow capability kill to kill processes
Allow macro domain_signull_all_domains() to send a null signal to all domains
FEDORA-2019-d68c9e27f8 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-d68c9e27f8 selinux-policy-3.14.3-50.fc30 has been pushed to the Fedora 30 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-2019-d68c9e27f8 FEDORA-2019-f83217e2bf has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-f83217e2bf selinux-policy-3.14.3-51.fc30 has been pushed to the Fedora 30 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-2019-f83217e2bf FEDORA-2019-70d80ad4bc has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-70d80ad4bc selinux-policy-3.14.3-52.fc30 has been pushed to the Fedora 30 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-2019-70d80ad4bc selinux-policy-3.14.3-52.fc30 has been pushed to the Fedora 30 stable repository. If problems still persist, please make note of it in this bug report. |
Description of problem: Happened a few minutes after enabling numad for the first time, seems like perhaps an incompatibility between the default selinux setups of numad and flatpak I've already added a local policy exception, but I figured it was worth reporting. SELinux is preventing numad from using the 'signull' accesses on a process. ***** Plugin catchall (100. confidence) suggests ************************** If you believe that numad should be allowed signull access on processes labeled flatpak_helper_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 'numad' --raw | audit2allow -M my-numad # semodule -X 300 -i my-numad.pp Additional Information: Source Context system_u:system_r:numad_t:s0 Target Context system_u:system_r:flatpak_helper_t:s0 Target Objects Unknown [ process ] Source numad Source Path numad Port <Unknown> Host (removed) Source RPM Packages Target RPM Packages Policy RPM selinux-policy-3.14.3-46.fc30.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 5.2.17-200.fc30.x86_64 #1 SMP Mon Sep 23 13:42:32 UTC 2019 x86_64 x86_64 Alert Count 8 First Seen 2019-10-08 09:42:07 EDT Last Seen 2019-10-08 09:43:52 EDT Local ID 8f3d33c6-05ed-49d3-93de-cb9bbbeae140 Raw Audit Messages type=AVC msg=audit(1570542232.400:598): avc: denied { signull } for pid=13559 comm="numad" scontext=system_u:system_r:numad_t:s0 tcontext=system_u:system_r:flatpak_helper_t:s0 tclass=process permissive=0 Hash: numad,numad_t,flatpak_helper_t,process,signull Version-Release number of selected component: selinux-policy-3.14.3-46.fc30.noarch Additional info: component: selinux-policy reporter: libreport-2.10.1 hashmarkername: setroubleshoot kernel: 5.2.17-200.fc30.x86_64 type: libreport