Bug 1279136 - SELinux is preventing hpfax from 'open' accesses on the chr_file /dev/bus/usb/001/038. [NEEDINFO]
SELinux is preventing hpfax from 'open' accesses on the chr_file /dev/bus/usb...
Product: Fedora
Classification: Fedora
Component: selinux-policy (Show other bugs)
x86_64 Unspecified
medium Severity low
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Assigned To: Miroslav Grepl
Fedora Extras Quality Assurance
Depends On:
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Reported: 2015-11-07 22:18 EST by Jakob Ullmann
Modified: 2016-07-19 16:46 EDT (History)
6 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2016-07-19 16:46:35 EDT
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Regression: ---
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Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
mgrepl: needinfo? (jakob.ullmann)

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Description Jakob Ullmann 2015-11-07 22:18:41 EST
Description of problem:
I was just trying to print a document... Nothing special here, the problem occurred repeatedly over the last days.
SELinux is preventing hpfax from 'open' accesses on the chr_file /dev/bus/usb/001/038.

*****  Plugin restorecon (90.5 confidence) suggests   ************************

If you want to fix the label. 
/dev/bus/usb/001/038 default label should be usb_device_t.
Then you can run restorecon.
# /sbin/restorecon -v /dev/bus/usb/001/038

*****  Plugin device (9.50 confidence) suggests   ****************************

If you want to allow hpfax to have open access on the 038 chr_file
Then you need to change the label on /dev/bus/usb/001/038 to a type of a similar device.
# semanage fcontext -a -t SIMILAR_TYPE '/dev/bus/usb/001/038'
# restorecon -v '/dev/bus/usb/001/038'

*****  Plugin catchall (1.40 confidence) suggests   **************************

If you believe that hpfax should be allowed open access on the 038 chr_file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
allow this access for now by executing:
# grep hpfax /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:cupsd_t:s0-s0:c0.c1023
Target Context                system_u:object_r:device_t:s0
Target Objects                /dev/bus/usb/001/038 [ chr_file ]
Source                        hpfax
Source Path                   hpfax
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-128.18.fc22.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.2.5-201.fc22.x86_64 #1 SMP Wed
                              Oct 28 20:00:23 UTC 2015 x86_64 x86_64
Alert Count                   3
First Seen                    2015-11-05 23:23:22 CET
Last Seen                     2015-11-08 04:16:50 CET
Local ID                      fd6fd7ce-b851-4243-9943-63ab89494a60

Raw Audit Messages
type=AVC msg=audit(1446952610.107:662): avc:  denied  { open } for  pid=8720 comm="hpfax" path="/dev/bus/usb/001/038" dev="devtmpfs" ino=211991 scontext=system_u:system_r:cupsd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=chr_file permissive=0

Hash: hpfax,cupsd_t,device_t,chr_file,open

Version-Release number of selected component:

Additional info:
reporter:       libreport-2.6.3
hashmarkername: setroubleshoot
kernel:         4.2.5-201.fc22.x86_64
type:           libreport
Comment 1 Miroslav Grepl 2015-11-20 04:50:34 EST
Are you able to reproduce it? If so, could please check labeling of usb device for which you get AVC?

ls -Z /dev/bus/usb/001/<dev_number>
Comment 2 Fedora End Of Life 2016-07-19 16:46:35 EDT
Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this

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