Selinux relabels any directory that is bind mounted
Issue
- After RHSA-2022:5068 - Security Advisory is applied on RHEL8 machine (workernode in OCP cluster) we have issue with selinux context on directory/files /etc/sysconfig. Bad context permission cause network issue. Network manager can't read file /etc/sysconfig/network-scripts/ifcfg-ens160
Before RHSA-2022:5068 - Security Advisory update SELinux context was
root@classrooom.example.com network-scripts# ls -hlZ /etc/sysconfig/
total 104K
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 374 May 16 2019 anaconda
-rw-r--r--. 1 root root unconfined_u:object_r:etc_t:s0 72 Jul 26 2019 authconfig
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 95 May 28 2021 chronyd
drwxr-xr-x. 2 root root system_u:object_r:etc_t:s0 6 Feb 15 2021 console
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 150 Apr 12 17:47 cpupower
-rw-r--r--. 1 root root system_u:object_r:bin_t:s0 110 Jun 12 2019 crond
-rw-------. 1 root root system_u:object_r:system_conf_t:s0 417 Aug 12 2021 ebtables-config
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 73 Mar 4 15:04 firewalld
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 111 Mar 9 15:12 goferd
lrwxrwxrwx. 1 root root system_u:object_r:etc_t:s0 15 Aug 19 2021 grub -> ../default/grub
-rw-------. 1 root root system_u:object_r:system_conf_t:s0 635 Aug 12 2021 ip6tables
-rw-------. 1 root root system_u:object_r:system_conf_t:s0 2.1K Aug 12 2021 ip6tables-config
-rw-------. 1 root root system_u:object_r:system_conf_t:s0 550 Aug 12 2021 iptables
-rw-------. 1 root root system_u:object_r:system_conf_t:s0 2.1K Aug 12 2021 iptables-config
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 903 Jan 30 2021 irqbalance
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 2.5K Nov 2 2021 kdump
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 185 May 3 03:02 kernel
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 310 Jun 24 2021 man-db
drwxr-xr-x. 2 root root system_u:object_r:etc_t:s0 6 Feb 15 2021 modules
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 110 Mar 9 15:07 network
drwxr-xr-x. 2 root root system_u:object_r:net_conf_t:s0 110 Mar 21 22:53 network-scripts
-rw-------. 1 root root system_u:object_r:etc_t:s0 364 Aug 20 2021 nftables.conf
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 999 Mar 11 11:21 openvswitch
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 0 Mar 11 11:27 orig_irq_banned_cpus
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 92 Oct 22 2020 puppet
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 87 Oct 22 2020 pxp-agent
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 2.9K Aug 5 2021 raid-check
drwxr-xr-x. 4 root root system_u:object_r:rhnsd_conf_t:s0 77 Jun 21 2019 rhn
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 73 Nov 24 2020 rpcbind
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 196 Aug 6 2021 rsyslog
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 0 Jan 8 2021 run-parts
-rw-r--r--. 1 root root system_u:object_r:etc_t:s0 428 Feb 22 12:41 samba
lrwxrwxrwx. 1 root root system_u:object_r:etc_t:s0 17 Sep 3 2019 selinux -> ../selinux/config
-rw-r-----. 1 root root system_u:object_r:etc_t:s0 591 Jul 12 2021 sshd
After RHSA-2022:5068 - Security Advisory was applied SELinux Context changes to:
root@classroom.example.com network-scripts# ls -hlZ /etc/sysconfig/
total 108K
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 374 May 16 2019 anaconda
-rw-r--r--. 1 root root unconfined_u:object_r:container_file_t:s0 72 Jul 26 2019 authconfig
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 95 May 28 2021 chronyd
drwxr-xr-x. 2 root root system_u:object_r:container_file_t:s0 6 Feb 15 2021 console
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 150 Apr 16 04:36 cpupower
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 110 Sep 30 2021 crond
-rw-------. 1 root root system_u:object_r:container_file_t:s0 417 Nov 29 16:23 ebtables-config
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 73 Feb 24 14:04 firewalld
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 111 Mar 9 15:12 goferd
lrwxrwxrwx. 1 root root system_u:object_r:container_file_t:s0 15 Mar 28 16:12 grub -> ../default/grub
-rw-------. 1 root root system_u:object_r:container_file_t:s0 635 Nov 29 16:23 ip6tables
-rw-------. 1 root root system_u:object_r:container_file_t:s0 2.1K Nov 29 16:23 ip6tables-config
-rw-------. 1 root root system_u:object_r:container_file_t:s0 550 Nov 29 16:23 iptables
-rw-------. 1 root root system_u:object_r:container_file_t:s0 2.1K Nov 29 16:23 iptables-config
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 903 Jan 30 2021 irqbalance
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 2.5K Jan 27 12:59 kdump
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 185 May 16 11:51 kernel
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 310 Jun 24 2021 man-db
drwxr-xr-x. 2 root root system_u:object_r:container_file_t:s0 6 Feb 15 2021 modules
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 110 Mar 9 15:07 network
drwxr-xr-x. 2 root root system_u:object_r:container_file_t:s0 110 Mar 21 18:17 network-scripts
-rw-------. 1 root root system_u:object_r:container_file_t:s0 364 Feb 24 14:05 nftables.conf
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 999 Mar 11 11:21 openvswitch
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 0 Mar 11 11:27 orig_irq_banned_cpus
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 92 Oct 22 2020 puppet
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 87 Oct 22 2020 pxp-agent
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 2.9K Feb 24 05:11 raid-check
drwxr-xr-x. 4 root root system_u:object_r:container_file_t:s0 77 Jun 21 2019 rhn
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 160 Nov 23 21:02 rngd
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 73 Nov 24 2020 rpcbind
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 196 Jan 14 10:46 rsyslog
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 0 Jan 8 2021 run-parts
-rw-r--r--. 1 root root system_u:object_r:container_file_t:s0 428 Mar 18 09:13 samba
lrwxrwxrwx. 1 root root system_u:object_r:container_file_t:s0 17 Sep 3 2019 selinux -> ../selinux/config
-rw-r-----. 1 root root system_u:object_r:container_file_t:s0 591 Oct 26 2021 sshd
Environment
- Red Hat Enterprise Linux
- 8.5
- 8.6
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