Description of problem: The netdisco package creates the user 'netdisco' with uid > 500, login shell = /bin/bash and homedir=/usr/share/netdisco. Unfortunately, that combination of attributes causes SELinux to detect /usr/share/netdisco as a USER_HOME_DIR and /usr/share as a 'HOME_ROOT'. The result is that /usr/share gets labeled as system_u:object_r:home_root_t:s0 and all subdirs (/usr/share/*) are labeled as unconfined_u:object_r:user_home_dir_t:s0. This causes many thousands of AVC denials and a generally unusable system if running with SELinux enabled. Version-Release number of selected component (if applicable): 1.0-2.fc13 How reproducible: I haven't tried, but it should be 100% reproducible. Steps to Reproduce: 1. Install F13 with SELinux enabled. 2. Install netdisco. 3. 'touch ./autorelabel && reboot' (OR wait until some other process kicks off a relabel (ex. an update to selinux-policy* package) Actual results: Some services fail to start on boot. System is VERY slow. Thousands of AVC's logged. 'audispd: queue is full - dropping event' messages in /var/log/message. /usr/share is now labeled as system_u:object_r:home_root_t:s0 and the subdirs are labeled as unconfined_u:object_r:user_home_dir_t:s0. Panic ensues. Expected results: /usr/share labeling should not be affected by the installation of netdisco. Ponies. Additional info: To solve this problem on my machine, I simply changed the logon shell in /etc/passwd for netdisco to /sbin/nologin. Another option would have been to change the UID of that user to a value less than 500. I then ran 'semodule -B' then 'restorecon -v -R /usr/share' which resulted in the correct labeling being applied to /usr/share and its subdirs. (Later I performed a complete relabel just to be sure that SELinux was happy)
This bug is similar to 586271.
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