Bug 1187975
| Summary: | SELinux blocks LightDM VNC server | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Ian Pilcher <ipilcher> |
| 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: | 21 | CC: | dominick.grift, dwalsh, lvrabec, mgrepl, plautrba |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | selinux-policy-3.13.1-105.3.fc21 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2015-02-15 03:29:31 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Yes this would seem to need a boolean. commit ddee7efa224213cd817fb3e9394a772b9964c656
Author: Lukas Vrabec <lvrabec>
Date: Mon Feb 2 13:09:27 2015 +0100
Added boolean xdm_bind_vnc_tcp_port. BZ(1187975)
selinux-policy-3.13.1-105.3.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/selinux-policy-3.13.1-105.3.fc21 Package selinux-policy-3.13.1-105.3.fc21: * should fix your issue, * was pushed to the Fedora 21 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing selinux-policy-3.13.1-105.3.fc21' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-1768/selinux-policy-3.13.1-105.3.fc21 then log in and leave karma (feedback). selinux-policy-3.13.1-105.3.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report. |
Description of problem: LightDM has the capability of listening on VNC ports and launching Xvnc on demand. SELinux is blocking LightDM (xdm_t) from listening on VNC ports (vnc_port_t): type=AVC msg=audit(1422759252.925:895): avc: denied { name_bind } for pid=25908 comm="lightdm" src=5910 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:vnc_port_t:s0 tclass=tcp_socket permissive=0 Boolean worthy? Version-Release number of selected component (if applicable): selinux-policy-targeted-3.13.1-105.fc21.noarch How reproducible: 100% Steps to Reproduce: 1. Enable LightDM VNC server (enabled=true in [VNCServer] section of /etc/lightdm/lightdm.conf) 2. [Re]start LightDM Actual results: LightDM cannot bind to VNC port. Log contains messages such as: Jan 31 20:54:12 ian.penurio.us lightdm[25908]: ** (lightdm:25908): WARNING **: Failed to create IPv4 VNC socket: Error binding to address: Permission denied Jan 31 20:54:12 ian.penurio.us lightdm[25908]: ** (lightdm:25908): WARNING **: Failed to create IPv6 VNC socket: Error binding to address: Permission denied Expected results: LightDM is able to listen on VNC port. Additional info: Workaround is to start Xvnc with a systemd socket and use XDMCP.