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Bug 1978507 - systemd[1]: Failed to remove "/run/systemd/default-hostname": Permission denied
Summary: systemd[1]: Failed to remove "/run/systemd/default-hostname": Permission denied
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: selinux-policy
Version: 9.0
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: beta
: 9.0 Beta
Assignee: Zdenek Pytela
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-07-02 02:50 UTC by Frank Liang
Modified: 2021-12-07 21:37 UTC (History)
11 users (show)

Fixed In Version: selinux-policy-34.1.14-1.el9
Doc Type: No Doc Update
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-12-07 21:35:16 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1966492 1 medium CLOSED SELinux prevents systemd-hostnamed from removing the /run/systemd/default-hostname file 2023-05-27 08:17:56 UTC

Description Frank Liang 2021-07-02 02:50:27 UTC 
Description of problem:
Fount below deny log in aws test RHEL-9.0.0-20210701.1(selinux-policy-34.1.9-1.el9.noarch) testing.

Jul 01 09:01:27 ip-10-22-1-103.us-west-2.compute.internal systemd[1]: Hostname set to <ip-10-22-1-103.us-west-2.compute.internal>.
Jul 01 09:01:27 ip-10-22-1-103.us-west-2.compute.internal systemd[1]: Failed to remove "/run/systemd/default-hostname": Permission denied
Jul 01 09:01:27 ip-10-22-1-103.us-west-2.compute.internal kernel: random: lvmconfig: uninitialized urandom read (4 bytes read)

Jul 01 08:58:46 ip-10-22-1-103.us-west-2.compute.internal audit: MAC_STATUS enforcing=1 old_enforcing=0 auid=4294967295 ses=4294967295 enabled=1 old-enabled=1 lsm=selinux res=1
Jul 01 08:58:46 ip-10-22-1-103.us-west-2.compute.internal audit: MAC_POLICY_LOAD auid=4294967295 ses=4294967295 lsm=selinux res=1
Jul 01 08:58:46 ip-10-22-1-103.us-west-2.compute.internal audit[1]: AVC avc:  denied  { unlink } for  pid=1 comm="systemd" name="default-hostname" dev="tmpfs" ino=12 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:hostname_etc_t:s0 tclass=file permissive=0

Version-Release number of selected components (if applicable):

RHEL Version:
RHEL-9.0(5.13.0-0.rc7.51.el9.x86_64)

How reproducible:
100%

Steps to Reproduce:
1. start the latest RHEL-9 d3en.xlarge instance
2. check journal log
Actual results:
avd dennied log found

Expected results:
no such error

Additional info:
N/A
Comment 2 Martin Pitt 2021-08-07 05:32:14 UTC 

*** This bug has been marked as a duplicate of bug 1966492 ***
Comment 3 Frank Liang 2021-08-09 03:20:28 UTC 
bz1966492 was fixed and verified in selinux-policy-34.1.7-1.el9.
As my comments in bz1966492, this one is found in newer version and still exists in selinux-policy-34.1.10-1.el9.
So could you explain more about why they are the same? thanks
Comment 5 Martin Pitt 2021-08-09 05:08:18 UTC 
Frank: Fair enough, sorry. Bug 1966492 has exactly the same file and operation in the title, but I see that in its comments it talks about a grab bag of related issues. I'll let the SELinux policy maintainers sort this out then.
Comment 7 Zdenek Pytela 2021-08-24 19:38:13 UTC 
I've submitted a Fedora PR to address the issue:
https://github.com/fedora-selinux/selinux-policy/pull/848
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