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Bug 2164845

Summary: SELinux prevents the NM iscsid dispatcher from reading the /proc/cpuinfo file
Product: Red Hat Enterprise Linux 9 Reporter: Jan Stodola <jstodola>
Component: selinux-policyAssignee: Zdenek Pytela <zpytela>
Status: CLOSED ERRATA QA Contact: Milos Malik <mmalik>
Severity: medium Docs Contact:
Priority: medium    
Version: 9.2CC: lvrabec, mmalik, nknazeko, tbajer, zpytela
Target Milestone: rcKeywords: Triaged
Target Release: 9.2Flags: pm-rhel: mirror+
Hardware: aarch64   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-38.1.6-1.el9 Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2023-05-09 08:17:16 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2129768    

Description Jan Stodola 2023-01-26 16:11:43 UTC 
Description of problem:
The following AVC appeared in audit.log after the default package set installation on aarch64 in FIPS mode ("fips=1" on the kernel command line):

type=AVC msg=audit(1674742919.572:45): avc:  denied  { read } for  pid=1003 comm="systemctl" name="cpuinfo" dev="proc" ino=4026531987 scontext=system_u:system_r:NetworkManager_dispatcher_iscsid_t:s0 tcontext=system_u:object_r:proc_t:s0 
tclass=file permissive=0



Version-Release number of selected component (if applicable):
RHEL-9.2.0-20230125.12
selinux-policy-38.1.4-1.el9

How reproducible:
Always on aach64

Steps to Reproduce:
1. Run installation on aarch64 with "fips=1" on the kernel command line. Install the default package set.
2. Check /var/log/audit/audit.log on the installed system.

Actual results:
AVC denials

Expected results:
No AVC

Additional info:
So far reproduced just on aarch64 and only in FIPS mode.
Comment 3 Zdenek Pytela 2023-01-26 18:12:38 UTC 
This is similar to bz#2158746, but for a different plugin:

----
type=PROCTITLE msg=audit(26.1.2023 15:30:09.370:39) : proctitle=/bin/systemctl --no-block reload iscsi.service
type=SYSCALL msg=audit(26.1.2023 15:30:09.370:39) : arch=aarch64 syscall=newfstatat success=yes exit=0 a0=0x3 a1=0xffffb5fa3fa0 a2=0xffffd825a1d8 a3=0x1000 items=0 ppid=1091 pid=1095 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=systemctl exe=/usr/bin/systemctl subj=system_u:system_r:NetworkManager_dispatcher_iscsid_t:s0 key=(null)
type=AVC msg=audit(26.1.2023 15:30:09.370:39) : avc:  denied  { getattr } for  pid=1095 comm=systemctl path=/proc/cpuinfo dev="proc" ino=4026531987 scontext=system_u:system_r:NetworkManager_dispatcher_iscsid_t:s0 tcontext=system_u:object_r:proc_t:s0 tclass=file permissive=1
----
type=PROCTITLE msg=audit(26.1.2023 15:30:09.970:47) : proctitle=/bin/systemctl --no-block reload iscsi.service
type=SYSCALL msg=audit(26.1.2023 15:30:09.970:47) : arch=aarch64 syscall=openat success=yes exit=3 a0=AT_FDCWD a1=0xffff9b8f5170 a2=O_RDONLY a3=0x0 items=0 ppid=1186 pid=1188 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=systemctl exe=/usr/bin/systemctl subj=system_u:system_r:NetworkManager_dispatcher_iscsid_t:s0 key=(null)
type=AVC msg=audit(26.1.2023 15:30:09.970:47) : avc:  denied  { open } for  pid=1188 comm=systemctl path=/proc/cpuinfo dev="proc" ino=4026531987 scontext=system_u:system_r:NetworkManager_dispatcher_iscsid_t:s0 tcontext=system_u:object_r:proc_t:s0 tclass=file permissive=1
type=AVC msg=audit(26.1.2023 15:30:09.970:47) : avc:  denied  { read } for  pid=1188 comm=systemctl name=cpuinfo dev="proc" ino=4026531987 scontext=system_u:system_r:NetworkManager_dispatcher_iscsid_t:s0 tcontext=system_u:object_r:proc_t:s0 tclass=file permissive=1
----
Comment 6 Nikola Knazekova 2023-02-09 15:55:10 UTC 
*** Bug 2158746 has been marked as a duplicate of this bug. ***
Comment 15 errata-xmlrpc 2023-05-09 08:17:16 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 (selinux-policy bug fix and enhancement update), 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-2023:2483