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Bug 466470

Summary: avc: denied { getsched } for pid=12121 comm="snmpd" ...
Product: Red Hat Enterprise Linux 5 Reporter: Milos Malik <mmalik>
Component: selinux-policyAssignee: Daniel Walsh <dwalsh>
Status: CLOSED ERRATA QA Contact: BaseOS QE <qe-baseos-auto>
Severity: medium Docs Contact:
Priority: medium    
Version: 5.3CC: ebenes, syeghiay
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-01-20 21:31:06 UTC Type: ---
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 2008-10-10 12:54:11 UTC
Description of problem:
During testing of selinux-policy on nightly builds of RHEL-5.3 some of my tests failed. They had the same issue -- SELinux denial when starting snmpd.

Version-Release number of selected component (if applicable):
net-snmp-libs-5.3.2.2-4.el5
net-snmp-5.3.2.2-4.el5
net-snmp-utils-5.3.2.2-4.el5
selinux-policy-2.4.6-164.el5
selinux-policy-devel-2.4.6-164.el5
selinux-policy-targeted-2.4.6-164.el5

How reproducible:
always

Steps to Reproduce:
# /etc/init.d/snmpd start
Starting snmpd: [  OK  ]
# ausearch -m AVC -ts recent
----
time->Fri Oct 10 08:42:33 2008
type=SYSCALL msg=audit(1223642553.353:293): arch=40000003 syscall=155 success=no exit=-13 a0=2f59 a1=b7f768dc a2=4bdff4 a3=b7f766d0 items=0 ppid=1 pid=12121 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=1 comm="snmpd" exe="/usr/sbin/snmpd" subj=root:system_r:snmpd_t:s0 key=(null)
type=AVC msg=audit(1223642553.353:293): avc:  denied  { getsched } for  pid=12121 comm="snmpd" scontext=root:system_r:snmpd_t:s0 tcontext=root:system_r:snmpd_t:s0 tclass=process
----
time->Fri Oct 10 08:42:33 2008
type=SYSCALL msg=audit(1223642553.353:294): arch=40000003 syscall=157 success=no exit=-13 a0=2f59 a1=ffffffcc a2=4bdff4 a3=b7f766d0 items=0 ppid=1 pid=12121 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=1 comm="snmpd" exe="/usr/sbin/snmpd" subj=root:system_r:snmpd_t:s0 key=(null)
type=AVC msg=audit(1223642553.353:294): avc:  denied  { getsched } for  pid=12121 comm="snmpd" scontext=root:system_r:snmpd_t:s0 tcontext=root:system_r:snmpd_t:s0 tclass=process
# /etc/init.d/snmpd stop
Stopping snmpd: [  OK  ]
# sesearch -s snmpd_t -t snmpd_t -a | grep getsched
# 
  
Actual results:
SELinux denial during start of snmpd

Expected results:
no SELinux denial during start of snmpd

Additional info:

Comment 2 Daniel Walsh 2008-10-15 18:58:30 UTC
Fixed in selinux-policy-2.4.6-166.el5

Comment 3 Milos Malik 2008-10-16 15:16:22 UTC
The previous AVCs (2 getsched operations) appeared in enforcing mode. Today I have extended the test for permissive mode and I got following AVCs (1 getsched + 1 setsched operation). Dan, could you please look at it.

RHEL5.3-Server-20081015.nightly

selinux-policy-2.4.6-165.el5
selinux-policy-devel-2.4.6-165.el5
selinux-policy-targeted-2.4.6-165.el5
net-snmp-utils-5.3.2.2-4.el5
net-snmp-libs-5.3.2.2-4.el5
net-snmp-5.3.2.2-4.el5
policycoreutils-1.33.12-14.1.el5

How to reproduce:
# setenforce 0
# /etc/init.d/snmpd start
Starting snmpd: [  OK  ]
# /etc/init.d/snmpd stop
Stopping snmpd: [  OK  ]
# ausearch -ts recent -m AVC
----
time->Thu Oct 16 11:04:22 2008
type=SYSCALL msg=audit(1224169462.799:256): arch=14 syscall=155 success=yes ex
it=0 a0=76be a1=f7fe8c34 a2=ff82d358 a3=0 items=0 ppid=1 pid=30398 auid=0 uid=
0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=7 comm="snm
pd" exe="/usr/sbin/snmpd" subj=root:system_r:snmpd_t:s0 key=(null)
type=AVC msg=audit(1224169462.799:256): avc:  denied  { getsched } for  pid=30
398 comm="snmpd" scontext=root:system_r:snmpd_t:s0 tcontext=root:system_r:snmp
d_t:s0 tclass=process
----
time->Thu Oct 16 11:04:22 2008
type=SYSCALL msg=audit(1224169462.800:257): arch=14 syscall=156 success=yes ex
it=0 a0=76be a1=0 a2=ff82d358 a3=0 items=0 ppid=1 pid=30398 auid=0 uid=0 gid=0
 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=7 comm="snmpd" exe
="/usr/sbin/snmpd" subj=root:system_r:snmpd_t:s0 key=(null)
type=AVC msg=audit(1224169462.800:257): avc:  denied  { setsched } for  pid=30
398 comm="snmpd" scontext=root:system_r:snmpd_t:s0 tcontext=root:system_r:snmp
d_t:s0 tclass=process

Comment 5 Daniel Walsh 2008-10-16 18:59:14 UTC
I see this in the package.

If you 

# sesearch --allow | grep snmpd_t | grep setsched

What does it return?

Comment 6 Daniel Walsh 2008-10-16 20:04:37 UTC
I said it was fixed in selinux-policy-2.4.6-166.el5

You said it was not in 165.  I know that.  Wild goose chase.

Comment 11 errata-xmlrpc 2009-01-20 21:31:06 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2009-0163.html