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  1. RHEL
  2. RHEL-82388

SELinux prevents dhcpcd from reading files stored in /run/dhcpcd-ci/ directory

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    • rhel-10.0
    • selinux-policy
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    • rhel-sst-security-selinux
    • ssg_security
    • None
    • False
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      Please provide the package NVR for which the bug is seen:

      audit-4.0.3-1.el10.x86_64
      selinux-policy-40.13.25-1.el10.noarch

      How reproducible is this bug?

      always

      Steps to reproduce

      1. get a RHEL-10.0 machine (targeted policy is active)
      2. git clone https://src.fedoraproject.org/tests/dhcpcd
      3. run the test stored in Sanity/ipv4-tests directory
      4. search for SELinux denials

      Expected results

      • no SELinux denials

      Actual results

      ----
      type=PROCTITLE msg=audit(03/06/2025 04:15:47.410:703) : proctitle=dhcpcd -4 -M -d --logfile /var/run/dhcpcd-ci/dhcpcd-test.log.dhcpcd-domain-dns.conf -f /var/run/dhcpcd-ci/dhcpcd-domain-dns.conf 
      type=PATH msg=audit(03/06/2025 04:15:47.410:703) : item=0 name=/var/run/dhcpcd-ci/dhcpcd-domain-dns.conf inode=2012 dev=00:1a mode=file,644 ouid=root ogid=root rdev=00:00 obj=unconfined_u:object_r:var_run_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 
      type=CWD msg=audit(03/06/2025 04:15:47.410:703) : cwd=/root/dhcpcd/Sanity/ipv4-tests 
      type=SYSCALL msg=audit(03/06/2025 04:15:47.410:703) : arch=x86_64 syscall=openat success=yes exit=4 a0=AT_FDCWD a1=0x55c0ce7d4490 a2=O_RDONLY a3=0x0 items=1 ppid=8221 pid=8234 auid=root uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=pts0 ses=4 comm=dhcpcd exe=/usr/sbin/dhcpcd subj=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 key=(null) 
      type=AVC msg=audit(03/06/2025 04:15:47.410:703) : avc:  denied  { open } for  pid=8234 comm=dhcpcd path=/run/dhcpcd-ci/dhcpcd-domain-dns.conf dev="tmpfs" ino=2012 scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:var_run_t:s0 tclass=file permissive=1 
      type=AVC msg=audit(03/06/2025 04:15:47.410:703) : avc:  denied  { read } for  pid=8234 comm=dhcpcd name=dhcpcd-domain-dns.conf dev="tmpfs" ino=2012 scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:var_run_t:s0 tclass=file permissive=1 
      ----
      type=PROCTITLE msg=audit(03/06/2025 04:15:47.411:704) : proctitle=dhcpcd -4 -M -d --logfile /var/run/dhcpcd-ci/dhcpcd-test.log.dhcpcd-domain-dns.conf -f /var/run/dhcpcd-ci/dhcpcd-domain-dns.conf 
      type=PATH msg=audit(03/06/2025 04:15:47.411:704) : item=0 name=/var/run/dhcpcd-ci/dhcpcd-domain-dns.conf inode=2012 dev=00:1a mode=file,644 ouid=root ogid=root rdev=00:00 obj=unconfined_u:object_r:var_run_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 
      type=CWD msg=audit(03/06/2025 04:15:47.411:704) : cwd=/root/dhcpcd/Sanity/ipv4-tests 
      type=SYSCALL msg=audit(03/06/2025 04:15:47.411:704) : arch=x86_64 syscall=newfstatat success=yes exit=0 a0=AT_FDCWD a1=0x55c0ce7d4490 a2=0x7ffee5d375c0 a3=0x0 items=1 ppid=8221 pid=8234 auid=root uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=pts0 ses=4 comm=dhcpcd exe=/usr/sbin/dhcpcd subj=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 key=(null) 
      type=AVC msg=audit(03/06/2025 04:15:47.411:704) : avc:  denied  { getattr } for  pid=8234 comm=dhcpcd path=/run/dhcpcd-ci/dhcpcd-domain-dns.conf dev="tmpfs" ino=2012 scontext=unconfined_u:system_r:dhcpc_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:var_run_t:s0 tclass=file permissive=1 
      ----
      

      https://artifacts.osci.redhat.com/testing-farm/57af7453-27cd-4694-abd9-3561cf366989/

      see part:

       /plans/cs_stacks/image-mode-critical-tier1/dhcpcd fail

      avc denial:

      https://artifacts.osci.redhat.com/testing-farm/57af7453-27cd-4694-abd9-3561cf366989/work-dhcpcd_2lhcg4v/plans/cs_stacks/image-mode-critical-tier1/dhcpcd/execute/data/guest/default-0/public/Sanity/ipv4-tests-3/checks/avc.txt

              rhn-support-zpytela Zdenek Pytela
              psklenar Petr Sklenar
              Zdenek Pytela Zdenek Pytela
              Milos Malik Milos Malik
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                Created:
                Updated:
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