Bug 849335
| Summary: | SELinux is preventing /usr/bin/boinc_client from 'getattr' accesses on the chr_file /dev/ttyACM0. | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Ladislav Nesnera <nesnera> | ||||
| Component: | selinux-policy | Assignee: | Miroslav Grepl <mgrepl> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 17 | CC: | dominick.grift, dwalsh, mgrepl | ||||
| Target Milestone: | --- | Keywords: | Reopened | ||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | abrt_hash:daadbe83333e5ce25fad404970980316ebc649ab08ec681e356bdec905f122a9 | ||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2012-09-21 23:58:28 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: | |||||||
| Attachments: |
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/dev/ttyACM0 is mislabeled and it looks like a race condition. How is /dev/ttyACM0 labeled now? # ls -lZ /dev/ttyACM0 It should be matchpathcon /dev/ttyACM0 /dev/ttyACM0 system_u:object_r:tty_device_t:s0 It you see this labeling and you are able to reproduce it, please reopen. You are right. The response to the command
# ls -lZ /dev/ttyACM0
is
crw-rw----. root dialout system_u:object_r:tty_device_t:s0 /dev/ttyACM0
Ok, I added fixes to prevent this issue. Very nice! Thanks a lot, especially for so fast solution selinux-policy-3.10.0-149.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/selinux-policy-3.10.0-149.fc17 Package selinux-policy-3.10.0-149.fc17: * should fix your issue, * was pushed to the Fedora 17 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing selinux-policy-3.10.0-149.fc17' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-14301/selinux-policy-3.10.0-149.fc17 then log in and leave karma (feedback). Created attachment 615114 [details] SELinux log SELinux warning occurred again :( Have a look at attached log and notice that policy prm is xx.146 but console output is 149 yum info selinux-policy Loaded plugins: langpacks, presto, refresh-packagekit Installed Packages Name : selinux-policy Arch : noarch Version : 3.10.0 Release : 149.fc17 Size : 62 Repo : installed From repo : updates-testing Summary : SELinux policy configuration URL : http://oss.tresys.com/repos/refpolicy/ License : GPLv2+ Description : SELinux Reference Policy - modular. : Based off of reference policy: Checked out revision 2.20091117 System was restarted after upgradevb This is strange. What does # sesearch -T |grep \"ttyACM0 |wc -l for you? Well. I have installed setools-console-3.3.7-24.fc17 # sesearch -T |grep \"ttyACM0 |wc -l 61 That's all ;) selinux-policy-3.10.0-149.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report. |
libreport version: 2.0.10 executable: /usr/bin/python2.7 hashmarkername: setroubleshoot kernel: 3.5.1-1.fc17.x86_64 time: Sat 18 Aug 2012 03:10:48 PM CEST description: :SELinux is preventing /usr/bin/boinc_client from 'getattr' accesses on the chr_file /dev/ttyACM0. : :***** Plugin restorecon (90.5 confidence) suggests ************************* : :If you want to fix the label. :/dev/ttyACM0 default label should be tty_device_t. :Then you can run restorecon. :Do :# /sbin/restorecon -v /dev/ttyACM0 : :***** Plugin device (9.50 confidence) suggests ***************************** : :If you want to allow boinc_client to have getattr access on the ttyACM0 chr_file :Then you need to change the label on /dev/ttyACM0 to a type of a similar device. :Do :# semanage fcontext -a -t SIMILAR_TYPE '/dev/ttyACM0' :# restorecon -v '/dev/ttyACM0' : :***** Plugin catchall (1.40 confidence) suggests *************************** : :If you believe that boinc_client should be allowed getattr access on the ttyACM0 chr_file by default. :Then you should report this as a bug. :You can generate a local policy module to allow this access. :Do :allow this access for now by executing: :# grep boinc_client /var/log/audit/audit.log | audit2allow -M mypol :# semodule -i mypol.pp : :Additional Information: :Source Context system_u:system_r:boinc_t:s0 :Target Context system_u:object_r:device_t:s0 :Target Objects /dev/ttyACM0 [ chr_file ] :Source boinc_client :Source Path /usr/bin/boinc_client :Port <Unknown> :Host (removed) :Source RPM Packages :Target RPM Packages :Policy RPM selinux-policy-3.10.0-145.fc17.noarch :Selinux Enabled True :Policy Type targeted :Enforcing Mode Enforcing :Host Name (removed) :Platform Linux (removed) 3.5.1-1.fc17.x86_64 #1 SMP Thu Aug : 9 17:50:43 UTC 2012 x86_64 x86_64 :Alert Count 18 :First Seen 2012-08-10 09:15:45 CEST :Last Seen 2012-08-18 15:05:38 CEST :Local ID 8f10bd1f-66b9-4d27-bbc2-e923cdfa8fd2 : :Raw Audit Messages :type=AVC msg=audit(1345295138.346:778): avc: denied { getattr } for pid=885 comm="boinc_client" path="/dev/ttyACM0" dev="devtmpfs" ino=1841110 scontext=system_u:system_r:boinc_t:s0 tcontext=system_u:object_r:device_t:s0 tclass=chr_file : : :type=SYSCALL msg=audit(1345295138.346:778): arch=x86_64 syscall=stat success=no exit=EACCES a0=176c308 a1=7fffd7e65b40 a2=7fffd7e65b40 a3=0 items=0 ppid=884 pid=885 auid=4294967295 uid=995 gid=992 euid=995 suid=995 fsuid=995 egid=992 sgid=992 fsgid=992 tty=(none) ses=4294967295 comm=boinc_client exe=2F7573722F62696E2F626F696E635F636C69656E74202864656C6574656429 subj=system_u:system_r:boinc_t:s0 key=(null) : :Hash: boinc_client,boinc_t,device_t,chr_file,getattr : :audit2allow : :#============= boinc_t ============== :allow boinc_t device_t:chr_file getattr; : :audit2allow -R : :#============= boinc_t ============== :allow boinc_t device_t:chr_file getattr; :