Bug 567004

Summary: SELinux is preventing /usr/bin/qemu-kvm "setattr" access on 4.
Product: [Fedora] Fedora Reporter: Casey Dahlin <cdahlin>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: 12CC: berrange, dwalsh, mgrepl, twaugh, vanhoof
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard: setroubleshoot_trace_hash:2614f3b50f989c7a8dd3edad4547ae8778a6494b0b565b83b679d6d4020fa5a5
Fixed In Version: selinux-policy-3.6.32-92.fc12 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-03-04 00:17:02 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 Casey Dahlin 2010-02-21 02:21:17 UTC 
Summary:

SELinux is preventing /usr/bin/qemu-kvm "setattr" access on 4.

Detailed Description:

[qemu-kvm has a permissive type (svirt_t). This access was not denied.]

SELinux denied access requested by qemu-kvm. It is not expected that this access
is required by qemu-kvm and this access may signal an intrusion attempt. It is
also possible that the specific version or configuration of the application is
causing it to require additional access.

Allowing Access:

You can generate a local policy module to allow this access - see FAQ
(http://docs.fedoraproject.org/selinux-faq-fc5/#id2961385) Please file a bug
report.

Additional Information:

Source Context                system_u:system_r:svirt_t:s0:c325,c846
Target Context                system_u:object_r:devpts_t:s0:c325,c846
Target Objects                4 [ chr_file ]
Source                        qemu-kvm
Source Path                   /usr/bin/qemu-kvm
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           qemu-system-x86-0.11.0-13.fc12
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.32-89.fc12
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   catchall
Host Name                     (removed)
Platform                      Linux (removed) 2.6.31.12-174.2.22.fc12.x86_64 #1
                              SMP Fri Feb 19 18:55:03 UTC 2010 x86_64 x86_64
Alert Count                   1
First Seen                    Sat 20 Feb 2010 09:20:05 PM EST
Last Seen                     Sat 20 Feb 2010 09:20:05 PM EST
Local ID                      04a8efb0-8c21-4166-92e4-8011fe55e0cb
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1266718805.216:45068): avc:  denied  { setattr } for  pid=8118 comm="qemu-kvm" name="4" dev=devpts ino=7 scontext=system_u:system_r:svirt_t:s0:c325,c846 tcontext=system_u:object_r:devpts_t:s0:c325,c846 tclass=chr_file

node=(removed) type=SYSCALL msg=audit(1266718805.216:45068): arch=c000003e syscall=92 success=yes exit=128 a0=7fff854129b0 a1=6b a2=5 a3=7fff85412270 items=0 ppid=1 pid=8118 auid=4294967295 uid=107 gid=107 euid=107 suid=107 fsuid=107 egid=107 sgid=107 fsgid=107 tty=(none) ses=4294967295 comm="qemu-kvm" exe="/usr/bin/qemu-kvm" subj=system_u:system_r:svirt_t:s0:c325,c846 key=(null)



Hash String generated from  catchall,qemu-kvm,svirt_t,devpts_t,chr_file,setattr
audit2allow suggests:

#============= svirt_t ==============
allow svirt_t devpts_t:chr_file setattr;
Comment 1 Daniel Walsh 2010-02-22 20:08:46 UTC 
Miroslav, 

We need to add

	type $1_devpts_t;
	term_pty($1_devpts_t)

	allow $1_t $1_devpts_t:chr_file { rw_chr_file_perms setattr };
	term_create_pty($1_t, $1_devpts_t)

to virt_domain_template

Which should then change the label to svirt_devpts_t and allow this access.
Comment 2 Miroslav Grepl 2010-02-23 09:26:27 UTC 
Fixed in selinux-policy-3.6.32-92.fc12
Comment 3 Fedora Update System 2010-02-23 20:58:00 UTC 
selinux-policy-3.6.32-92.fc12 has been submitted as an update for Fedora 12.
http://admin.fedoraproject.org/updates/selinux-policy-3.6.32-92.fc12
Comment 4 Fedora Update System 2010-02-26 03:44:51 UTC 
selinux-policy-3.6.32-92.fc12 has been pushed to the Fedora 12 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update selinux-policy'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F12/FEDORA-2010-2953
Comment 5 Fedora Update System 2010-03-04 00:13:29 UTC 
selinux-policy-3.6.32-92.fc12 has been pushed to the Fedora 12 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 6 Tim Waugh 2010-03-04 10:23:24 UTC 
I'm seeing this on F-13 with selinux-policy-3.7.10-4.fc13.noarch.
Comment 7 Daniel Walsh 2010-03-04 13:15:50 UTC 
Fixed in selinux-policy-3.7.11-1.fc13