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  1. RHEL
  2. RHEL-33643

AVCs generated when booting on upgraded system related to "/root/tmp_leapp_py3/leapp3" service

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    • Red Hat Enterprise Linux
    • Leapp: 9.6 & 10.0
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      What were you trying to do that didn't work?

      When leapp reboots the system on RHEL9 after upgrading, we can see setroubleshootd report AVCs:

      setroubleshoot[10728]: SELinux is preventing /usr/lib/systemd/systemd from execute access on the file leapp3. For complete SELinux messages run: sealert -l 2de8ab57-98d7-4a63-ae19-4f3a5bbb15dd
      setroubleshoot[10728]: SELinux is preventing /usr/lib/systemd/systemd from execute access on the file leapp3.
      setroubleshoot[10728]: SELinux is preventing /usr/bin/python3.9 from 'read, open' accesses on the file /root/tmp_leapp_py3/leapp3. For complete SELinux messages run: sealert -l 286209e9-55b5-4b75-ae80-3607a94c0b55
      

      These AVCs are expected to happen because the leapp_resume.service unit is "malformed": it tries to execute /root/tmp_leapp_py3/leapp3 while the file is labeled with admin_home_t, hence SELinux would prevent this from happening if the system was booting in Enforcing.

      I believe we should make sure the message doesn't even show up, which can be done very easily through creating a wrapper, as shown below:

      ExecStart=/bin/sh -c "/root/tmp_leapp_py3/leapp3 upgrade --resume"
      

      With such shell wrapper, the service will then run as initrc_t, which then removes the AVCs completely, thanks to the following rule:

      # sesearch -T -s init_t -t shell_exec_t -c process
      type_transition init_t shell_exec_t:process initrc_t;
      

      Please provide the package NVR for which bug is seen:

      leapp-upgrade-el8toel9-0.19.0-4.el8_9.noarch

      How reproducible:

      N/A

              leapp-notifications leapp-notifications
              rhn-support-rmetrich Renaud Métrich
              leapp-notifications leapp-notifications
              RHEL Upgrades QE Team RHEL Upgrades QE Team
              Miriam Portman Miriam Portman
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                Created:
                Updated: