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Bug 1967536 - selinux denies "search" of "dma_heap"
Summary: selinux denies "search" of "dma_heap"
Keywords:
Status: ON_QA
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: 33
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Zdenek Pytela
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
: 1976502 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-06-03 10:28 UTC by Marius Vollmer
Modified: 2021-07-09 07:20 UTC (History)
11 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Type: Bug
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System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1965743 1 medium CLOSED systemd was denied reading and searching /dev/dma_heap while booting with selinux-policy-34.9-1.fc34 2022-05-16 11:32:56 UTC

Description Marius Vollmer 2021-06-03 10:28:24 UTC 
Description of problem:

A recent Fedora 33 image created with updates-testing has some new unexpected audit messages:

audit: type=1400 audit(1622712108.353:391): avc:  denied  { search } for  pid=1757 comm="systemd-udevd" name="dma_heap" dev="devtmpfs" ino=127 scontext=system_u:system_r:udev_t:s0-s0:c0.c1023 tcontext=system_u:object_r:dma_device_t:s0 tclass=dir permissive=0

Version-Release number of selected component (if applicable):
selinux-policy-3.14.6-38.fc33.noarch

Additional info:

This is the log of creating the image: https://logs-https-frontdoor.apps.ocp.ci.centos.org/logs/image-refresh-2075-20210603-083131/log

Here is a typical journal: https://logs.cockpit-project.org/logs/pull-2075-20210603-084927-61bae4f6-fedora-testing-cockpit-project-cockpit/TestNetworkingMAC-testBondMac-fedora-testing-127.0.0.2-2601-FAIL.log.gz
Comment 1 Zdenek Pytela 2021-06-03 12:52:49 UTC 
Will be backported to F33 as soon as the rawhide PR is merged.
https://github.com/fedora-selinux/selinux-policy/pull/763
Comment 2 Ivan Font 2021-07-02 00:36:17 UTC 
To work around:

$ sudo setenforce 0
$ sudo chcon system_u:object_r:device_t:s0 /dev/dma_heap/
$ sudo setenforce 1
Comment 3 Fedora Update System 2021-07-02 08:42:52 UTC 
FEDORA-2021-3b341e9e71 has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2021-3b341e9e71
Comment 4 Fedora Update System 2021-07-03 01:04:31 UTC 
FEDORA-2021-3b341e9e71 has been pushed to the Fedora 33 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-3b341e9e71`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-3b341e9e71

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 5 Zdenek Pytela 2021-07-07 13:40:19 UTC 
*** Bug 1976502 has been marked as a duplicate of this bug. ***
Comment 6 Mathias Nicolajsen Kjærgaard 2021-07-08 21:33:41 UTC 
I can confirm that the update has fixed the issue on my system - after a reboot.
Comment 7 Zdenek Pytela 2021-07-09 07:20:42 UTC 
Reboot or

restorecon -Rv /dev/dma_heap

is required in F33.
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