| Summary: | SELinux is preventing /usr/lib/cups/backend/serial from write access on the chr_file ttyUSB0. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Gianluca Sforna <giallu> |
| Component: | selinux-policy-targeted | Assignee: | Miroslav Grepl <mgrepl> |
| Status: | CLOSED ERRATA | QA Contact: | Ben Levenson <benl> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 16 | CC: | dwalsh |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | selinux-policy-3.10.0-40.fc16 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-10-19 04:32:38 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
Fixed in selinux-policy-3.10.0-39.fc16 selinux-policy-3.10.0-40.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/selinux-policy-3.10.0-40.fc16 Package selinux-policy-3.10.0-40.fc16: * should fix your issue, * was pushed to the Fedora 16 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing selinux-policy-3.10.0-40.fc16' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2011-14363 then log in and leave karma (feedback). selinux-policy-3.10.0-40.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report. |
This is what I got when I plugged my USB printer to my laptop, Fedora 16 Beta. It seems the printer was properly configured anyway ***** Plugin catchall (100. confidence) suggests *************************** If you believe that serial should be allowed write access on the ttyUSB0 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 serial /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:usbtty_device_t:s0 Target Objects ttyUSB0 [ chr_file ] Source serial Source Path /usr/lib/cups/backend/serial Port <Unknown> Host novo Source RPM Packages cups-1.5.0-14.fc16 Target RPM Packages Policy RPM selinux-policy-3.10.0-36.fc16 Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name novo Platform Linux novo 3.1.0-0.rc8.git0.1.fc16.x86_64 #1 SMP Tue Oct 4 03:16:40 UTC 2011 x86_64 x86_64 Alert Count 1 First Seen Sat 08 Oct 2011 11:37:59 AM CEST Last Seen Sat 08 Oct 2011 11:37:59 AM CEST Local ID c7dbd333-0dc5-4fef-9983-d1a978bc5d81 Raw Audit Messages type=AVC msg=audit(1318066679.684:195): avc: denied { write } for pid=20745 comm="serial" name="ttyUSB0" dev=devtmpfs ino=493504 scontext=system_u:system_r:cupsd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:usbtty_device_t:s0 tclass=chr_file type=SYSCALL msg=audit(1318066679.684:195): arch=x86_64 syscall=open success=no exit=EACCES a0=7fffea449110 a1=901 a2=7fffea44911c a3=7fffea446ba0 items=0 ppid=20740 pid=20745 auid=4294967295 uid=0 gid=7 euid=0 suid=0 fsuid=0 egid=7 sgid=7 fsgid=7 tty=(none) ses=4294967295 comm=serial exe=/usr/lib/cups/backend/serial subj=system_u:system_r:cupsd_t:s0-s0:c0.c1023 key=(null) Hash: serial,cupsd_t,usbtty_device_t,chr_file,write audit2allow #============= cupsd_t ============== allow cupsd_t usbtty_device_t:chr_file write; audit2allow -R #============= cupsd_t ============== allow cupsd_t usbtty_device_t:chr_file write;