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Bug 1714800 - SELinux is preventing pmdalinux from 'read' accesses on the file mdadm.
Summary: SELinux is preventing pmdalinux from 'read' accesses on the file mdadm.
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: 30
Hardware: x86_64
OS: Unspecified
medium
low
Target Milestone: ---
Assignee: Lukas Vrabec
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: abrt_hash:af0fb3c175c2ec8de79112b56d1...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-05-28 21:48 UTC by Peter Trenholme
Modified: 2019-06-20 02:54 UTC (History)
7 users (show)

Fixed In Version: selinux-policy-3.14.3-39.fc30
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-20 02:54:57 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Peter Trenholme 2019-05-28 21:48:39 UTC 
Description of problem:
Just installed F-30 on a mirrored drive
SELinux is preventing pmdalinux from 'read' accesses on the file mdadm.

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

If you believe that pmdalinux should be allowed read access on the mdadm file 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 'pmdalinux' --raw | audit2allow -M my-pmdalinux
# semodule -X 300 -i my-pmdalinux.pp

Additional Information:
Source Context                system_u:system_r:pcp_pmcd_t:s0
Target Context                system_u:object_r:mdadm_exec_t:s0
Target Objects                mdadm [ file ]
Source                        pmdalinux
Source Path                   pmdalinux
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.14.3-37.fc30.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 5.1.5-300.fc30.x86_64 #1 SMP Sat
                              May 25 18:00:11 UTC 2019 x86_64 x86_64
Alert Count                   460
First Seen                    2019-05-27 20:36:42 PDT
Last Seen                     2019-05-28 14:39:51 PDT
Local ID                      38926c5c-c455-4b7e-a96e-d8ce1a42c139

Raw Audit Messages
type=AVC msg=audit(1559079591.816:4074): avc:  denied  { read } for  pid=1341 comm="pmdalinux" name="mdadm" dev="md127" ino=28322534 scontext=system_u:system_r:pcp_pmcd_t:s0 tcontext=system_u:object_r:mdadm_exec_t:s0 tclass=file permissive=0


Hash: pmdalinux,pcp_pmcd_t,mdadm_exec_t,file,read

Version-Release number of selected component:
selinux-policy-3.14.3-37.fc30.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.10.0
hashmarkername: setroubleshoot
kernel:         5.1.5-300.fc30.x86_64
type:           libreport
Comment 1 Lukas Vrabec 2019-05-29 07:48:30 UTC 
Lukas, 

pcp_pmcd_t is trying execute/read mdadm binary, is this OK ? 

Thanks,
Lukas.
Comment 2 Lukas Berk 2019-05-29 11:27:27 UTC 
Hey Lukas,

Yes, this is expected, we use the output from mdadm for some of our disk metrics;

% pminfo -fTt disk.md.status            

disk.md.status [per-multi-device "mdadm --test --detail <device>" return code]
Help:
per-multi-device "mdadm --test --detail <device>" return code
No value(s) available!

Thanks!
Comment 3 Lukas Vrabec 2019-05-30 09:30:02 UTC 
Lukas, 

Thanks for update. 

commit 7dabd9fa102e21b3e7c91a0e2eef6854e9f0f40d (HEAD -> rawhide)
Author: Lukas Vrabec <lvrabec>
Date:   Thu May 30 11:29:39 2019 +0200

    Allow pcp_pmcd_t domain to domtrans to mdadm_t domain BZ(1714800)
Comment 4 Fedora Update System 2019-05-31 08:37:10 UTC 
FEDORA-2019-3f20be4d52 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-3f20be4d52
Comment 5 Fedora Update System 2019-06-01 01:35:05 UTC 
selinux-policy-3.14.3-38.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-2019-3f20be4d52
Comment 6 Fedora Update System 2019-06-18 11:32:15 UTC 
FEDORA-2019-9da5c35472 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-9da5c35472
Comment 7 Fedora Update System 2019-06-19 01:03:05 UTC 
selinux-policy-3.14.3-39.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-2019-9da5c35472
Comment 8 Fedora Update System 2019-06-20 02:54:57 UTC 
selinux-policy-3.14.3-39.fc30 has been pushed to the Fedora 30 stable repository. If problems still persist, please make note of it in this bug report.
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