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Bug 1669095 - avc denied { send_msg } for exe="/usr/bin/dbus-daemon"
Summary: avc denied { send_msg } for exe="/usr/bin/dbus-daemon"
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: selinux-policy
Version: 8.0
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: 8.1
Assignee: Lukas Vrabec
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On: 1682526
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-01-24 10:42 UTC by Yongcheng Yang
Modified: 2020-11-14 07:55 UTC (History)
7 users (show)

Fixed In Version: selinux-policy-3.14.3-12.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-11-05 22:10:01 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2019:3547 0 None None None 2019-11-05 22:10:10 UTC

Description Yongcheng Yang 2019-01-24 10:42:19 UTC 
Description of problem:
----
time->Tue Jan 22 09:21:33 2019
type=USER_AVC msg=audit(1548145293.981:203): pid=756 uid=81 auid=4294967295 ses=4294967295 subj=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 msg='avc:  denied  { send_msg } for msgtype=error error_name=org.freedesktop.systemd1.NoSuchDynamicUser dest=:1.53 spid=1 tpid=27421 scontext=system_u:system_r:init_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dbus permissive=0  exe="/usr/bin/dbus-daemon" sauid=81 hostname=? addr=? terminal=?'
----
time->Tue Jan 22 09:21:59 2019
type=USER_AVC msg=audit(1548145319.053:204): pid=756 uid=81 auid=4294967295 ses=4294967295 subj=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 msg='avc:  denied  { send_msg } for msgtype=error error_name=org.freedesktop.systemd1.NoSuchDynamicUser dest=:1.55 spid=1 tpid=27422 scontext=system_u:system_r:init_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dbus permissive=0  exe="/usr/bin/dbus-daemon" sauid=81 hostname=? addr=? terminal=?'
----
Refer to http://beaker-archive.host.prod.eng.bos.redhat.com/beaker-logs/2019/01/33013/3301374/6418921/87169701/403416232/avc.log


Version-Release number of selected component (if applicable):
since selinux-policy-3.14.1-49.el8

How reproducible:
more reliable recently 

Steps to Reproduce:
Run testcase /nfs-utils/Regression/bz1129790-respect-Nobody-User-Nobody-Group
I.e.
1. Update /etc/idmapd.conf of value Nobody-User/Nobody-Group replacing "nobody" to others
2. Mount NFS and list files from mountpoint

Actual results:
# RHEL-8.0-20190116.1 with selinux-policy-3.14.1-51.el8
https://beaker.engineering.redhat.com/recipes/6418921#task87169701 (x86_64)
https://beaker.engineering.redhat.com/recipes/6404276#task86976980 (x86_64)
https://beaker.engineering.redhat.com/recipes/6410184#task87058399 (ppc64le)
# RHEL-8.0-20181220.1 with selinux-policy-3.14.1-49.el8
https://beaker.engineering.redhat.com/recipes/6343664#task86185488 (aarch64)

Expected results:
No avc warning

Additional info:
Adding keyword regression as didn't see this warning before.
Comment 1 Lukas Vrabec 2019-07-11 15:59:26 UTC 
Hi Yongcheng, 

Does it break anything or you just see the AVCs? 

Thanks,
Lukas.
Comment 2 Yongcheng Yang 2019-07-12 02:23:29 UTC 
Hey Lukas,
(In reply to Lukas Vrabec from comment #1)

Only the AVCs emits while NO other functional failures found.
Comment 13 errata-xmlrpc 2019-11-05 22:10:01 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2019:3547
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