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Bug 1379781

Summary: /usr/libexec/rhsmcertd-worker (rhsmcertd_t) sends signull to kernel_t
Product: Red Hat Enterprise Linux 7 Reporter: Robert Scheck <redhat-bugzilla>
Component: selinux-policyAssignee: Lukas Vrabec <lvrabec>
Status: CLOSED ERRATA QA Contact: Milos Malik <mmalik>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.2CC: ajanorka, lvrabec, mgrepl, mmalik, plautrba, pvrabec, robert.scheck, srandhaw, ssekidde, tcarlin
Target Milestone: rc   
Target Release: 7.4   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-08-01 15:15:11 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 Robert Scheck 2016-09-27 16:12:37 UTC 
Description of problem:
type=AVC msg=audit(1474974430.96:394487): avc:  denied  { signull } for  pid=11996 comm="rhsmcertd-worke" scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process
type=SYSCALL msg=audit(1474974430.96:394487): arch=x86_64 syscall=kill success=no exit=EACCES a0=25bb a1=0 a2=2edc a3=0 items=0 ppid=1977 pid=11996 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=rhsmcertd-worke exe=/usr/bin/python2.7 subj=system_u:system_r:rhsmcertd_t:s0 key=(null)

Version-Release number of selected component (if applicable):
selinux-policy-targeted-3.13.1-60.el7_2.9.noarch
subscription-manager-1.15.9-15.el7.x86_64

How reproducible:
Not sure, likely an RHSM internal routine.

Actual results:
SELinux Troubleshoot mail

Expected results:
No SELinux Troubleshoot mail
Comment 2 Robert Scheck 2016-09-27 16:20:35 UTC 
Cross-filed case 01710942 on the Red Hat customer portal, which also includes
the sosreport of the system (if needed).
Comment 3 Robert Scheck 2016-10-31 17:46:25 UTC 
Cross-filed case 01731427 (for another customer) on the Red Hat customer
portal, which also includes the sosreport of the system (if needed).
Comment 4 Robert Scheck 2016-11-24 13:32:15 UTC 
Bug #1398338 might be related, given it's IMHO a similar issue.
Comment 5 Robert Scheck 2017-02-03 19:30:21 UTC 
Still happens with selinux-policy-targeted-3.13.1-102.el7_3.7.noarch and
subscription-manager-1.17.15-1.el7.x86_64:

type=AVC msg=audit(1486146695.424:959971): avc:  denied  { signull } for  pid=23231 comm="rhsmcertd-worke" scontext=system_u:system_r:rhsmcertd_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process
type=SYSCALL msg=audit(1486146695.424:959971): arch=c000003e syscall=62 success=no exit=-13 a0=4f7b a1=0 a2=5abf a3=0 items=0 ppid=1082 pid=23231 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="rhsmcertd-worke" exe="/usr/bin/python2.7" subj=system_u:system_r:rhsmcertd_t:s0 key=(null)

Cross-filed case 01785785 on the Red Hat customer portal (another customer).
Comment 8 Lukas Vrabec 2017-02-08 09:37:09 UTC 
Adding workaround for now: 

# cat rhsmcertd_signull.cil 
(allow rhsmcertd_t kernel_t (process (signull)))

# semodule -i rhsmcertd_signull.cil
Comment 12 errata-xmlrpc 2017-08-01 15:15:11 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-2017:1861