Red Hat Bugzilla – Bug 241555
AVC Denial after 5-23-07 update
Last modified: 2008-08-02 19:40:34 EDT
Description of problem: After updating the kernel as per the may 23rd patch wireless functionality failed on a linksys network. Version-Release number of selected component (if applicable): How reproducible: continual until pseudo rectified Steps to Reproduce: 1.set SELinux to enforcing 2.attempt to access network Summary SELinux is preventing /usr/sbin/NetworkManager (NetworkManager_t) "unlink" to wlan0 (var_run_t). Detailed Description SELinux denied access requested by /usr/sbin/NetworkManager. It is not expected that this access is required by /usr/sbin/NetworkManager 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 Sometimes labeling problems can cause SELinux denials. You could try to restore the default system file context for wlan0, restorecon -v wlan0 If this does not work, there is currently no automatic way to allow this access. Instead, you can generate a local policy module to allow this access - see http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385 Or you can disable SELinux protection altogether. Disabling SELinux protection is not recommended. Please file a http://bugzilla.redhat.com/bugzilla/enter_bug.cgi against this package. Additional Information Source Context system_u:system_r:NetworkManager_t Target Context system_u:object_r:var_run_t Target Objects wlan0 [ sock_file ] Affected RPM Packages NetworkManager-0.6.5-2.fc7 [application] Policy RPM selinux-policy-2.6.4-8.fc7 Selinux Enabled True Policy Type targeted MLS Enabled True Enforcing Mode Permissive Plugin Name plugins.catchall_file Host Name localhost.localdomain Platform Linux localhost.localdomain 2.6.21-1.3194.fc7 #1 SMP Wed May 23 22:35:01 EDT 2007 i686 i686 Alert Count 27 First Seen Sun 27 May 2007 05:34:16 PM EDT Last Seen Sun 27 May 2007 07:39:48 PM EDT Local ID 0750ab4f-c992-41e5-9528-a240e832a766 Line Numbers Raw Audit Messages avc: denied { unlink } for comm="NetworkManager" dev=dm-0 egid=0 euid=0 exe="/usr/sbin/NetworkManager" exit=0 fsgid=0 fsuid=0 gid=0 items=0 name="wlan0" pid=1941 scontext=system_u:system_r:NetworkManager_t:s0 sgid=0 subj=system_u:system_r:NetworkManager_t:s0 suid=0 tclass=sock_file tcontext=system_u:object_r:var_run_t:s0 tty=(none) uid=0 Additional info: Switching the current mode for enforcing to permissive solved the problem and allowed wireless access to the network. However, I am unsure what changes caused the sudden AVC Denial message everytime I attempted to access the router.
Could you try restorecon -R -v /var/run This looks like a labeling problem. The question is how did the wlan0 get the wrong label.
Based on the date this bug was created, it appears to have been reported against rawhide during the development of a Fedora release that is no longer maintained. In order to refocus our efforts as a project we are flagging all of the open bugs for releases which are no longer maintained. If this bug remains in NEEDINFO thirty (30) days from now, we will automatically close it. If you can reproduce this bug in a maintained Fedora version (7, 8, or rawhide), please change this bug to the respective version and change the status to ASSIGNED. (If you're unable to change the bug's version or status, add a comment to the bug and someone will change it for you.) Thanks for your help, and we apologize again that we haven't handled these issues to this point. The process we're following is outlined here: http://fedoraproject.org/wiki/BugZappers/F9CleanUp We will be following the process here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping to ensure this doesn't happen again.
This bug has been in NEEDINFO for more than 30 days since feedback was first requested. As a result we are closing it. If you can reproduce this bug in the future against a maintained Fedora version please feel free to reopen it against that version. The process we're following is outlined here: http://fedoraproject.org/wiki/BugZappers/F9CleanUp