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Bug 1653872

Summary: SELinux prevents rngd from doing sched_setaffinity syscall
Product: Red Hat Enterprise Linux 8 Reporter: Milos Malik <mmalik>
Component: selinux-policyAssignee: Lukas Vrabec <lvrabec>
Status: CLOSED CURRENTRELEASE QA Contact: Milos Malik <mmalik>
Severity: medium Docs Contact:
Priority: medium    
Version: 8.0CC: ksiddiqu, lvrabec, mmalik, pkis, plautrba, rvr, ssekidde
Target Milestone: rcKeywords: TestBlocker
Target Release: 8.0Flags: pm-rhel: mirror+
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-3.14.1-49.el8 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-14 01:07:15 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:

Description Milos Malik 2018-11-27 19:27:45 UTC
Description of problem:

Version-Release number of selected component (if applicable):
upgrading from rng-tools.x86_64 6.2-1.el8 to rng-tools.x86_64 6.6-1.el8

How reproducible:
 * sometimes during package update

Steps to Reproduce:
1.
2.
3.

Actual results:
----
type=PROCTITLE msg=audit(11/27/2018 20:17:12.072:236) : proctitle=/sbin/rngd -f 
type=SYSCALL msg=audit(11/27/2018 20:17:12.072:236) : arch=x86_64 syscall=sched_setaffinity success=no exit=EACCES(Permission denied) a0=0x2ead a1=0x8 a2=0x7fabc8e22d30 a3=0x7fabc8e239d0 items=0 ppid=1 pid=11948 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=rngd exe=/usr/sbin/rngd subj=system_u:system_r:rngd_t:s0 key=(null) 
type=AVC msg=audit(11/27/2018 20:17:12.072:236) : avc:  denied  { setsched } for  pid=11948 comm=rngd scontext=system_u:system_r:rngd_t:s0 tcontext=system_u:system_r:rngd_t:s0 tclass=process permissive=0 
----

Expected results:
 * no SELinux denials

Comment 1 Milos Malik 2018-11-27 19:35:53 UTC
After the upgrade, each restart of rngd service produces such a SELinux denial.

Comment 2 Lukas Vrabec 2018-11-28 15:08:18 UTC
commit 7f76b622920fae4050c4a767402a3063ce0bbb55 (HEAD -> rawhide)
Author: Lukas Vrabec <lvrabec>
Date:   Wed Nov 28 16:08:01 2018 +0100

    Allow rngd_t domain to setsched

Comment 3 Kaleem 2018-12-03 04:26:25 UTC
*** Bug 1655079 has been marked as a duplicate of this bug. ***

Comment 4 Lukas Vrabec 2018-12-07 15:53:38 UTC
*** Bug 1657250 has been marked as a duplicate of this bug. ***