Description of problem: Tried to start mpd service (sudo service mpd start) SELinux is preventing mpd from using the 'dac_override' capabilities. ***** Plugin dac_override (91.4 confidence) suggests ********************** If you want to help identify if domain needs this access or you have a file with the wrong permissions on your system Then turn on full auditing to get path information about the offending file and generate the error again. Do Turn on full auditing # auditctl -w /etc/shadow -p w Try to recreate AVC. Then execute # ausearch -m avc -ts recent If you see PATH record check ownership/permissions on file, and fix it, otherwise report as a bugzilla. ***** Plugin catchall (9.59 confidence) suggests ************************** If you believe that mpd should have the dac_override capability by default. Then you should report this as a bug. You can generate a local policy module to allow this access. Do allow this access for now by executing: # ausearch -c 'mpd' --raw | audit2allow -M my-mpd # semodule -X 300 -i my-mpd.pp Additional Information: Source Context system_u:system_r:mpd_t:s0 Target Context system_u:system_r:mpd_t:s0 Target Objects Unknown [ capability ] Source mpd Source Path mpd Port <Unknown> Host (removed) Source RPM Packages Target RPM Packages Policy RPM selinux-policy-3.14.1-30.fc28.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 4.16.12-300.fc28.x86_64 #1 SMP Fri May 25 21:13:28 UTC 2018 x86_64 x86_64 Alert Count 1 First Seen 2018-06-01 20:56:03 EDT Last Seen 2018-06-01 20:56:03 EDT Local ID 5306a75c-d9bb-4b2d-9cfd-11704c911386 Raw Audit Messages type=AVC msg=audit(1527900963.14:1330): avc: denied { dac_override } for pid=6922 comm="mpd" capability=1 scontext=system_u:system_r:mpd_t:s0 tcontext=system_u:system_r:mpd_t:s0 tclass=capability permissive=0 Hash: mpd,mpd_t,mpd_t,capability,dac_override Version-Release number of selected component: selinux-policy-3.14.1-30.fc28.noarch Additional info: component: selinux-policy reporter: libreport-2.9.5 hashmarkername: setroubleshoot kernel: 4.16.12-300.fc28.x86_64 type: libreport
Milos, Again same story with dac_override could you look on it? THanks, Lukas.
# sestatus SELinux status: enabled SELinuxfs mount: /sys/fs/selinux SELinux root directory: /etc/selinux Loaded policy name: targeted Current mode: enforcing Mode from config file: enforcing Policy MLS status: enabled Policy deny_unknown status: allowed Memory protection checking: actual (secure) Max kernel policy version: 31 # ausearch -m avc -m user_avc -m selinux_err -m user_selinux_err -i -ts recent ---- type=PROCTITLE msg=audit(06/04/2018 08:53:29.736:233) : proctitle=/usr/bin/mpd --no-daemon type=PATH msg=audit(06/04/2018 08:53:29.736:233) : item=0 name=/var/log/mpd/ inode=9870514 dev=fc:02 mode=dir,755 ouid=mpd ogid=mpd rdev=00:00 obj=system_u:object_r:mpd_log_t:s0 nametype=PARENT cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 type=CWD msg=audit(06/04/2018 08:53:29.736:233) : cwd=/ type=SYSCALL msg=audit(06/04/2018 08:53:29.736:233) : arch=x86_64 syscall=openat success=no exit=EACCES(Permission denied) a0=0xffffff9c a1=0x55738903acf0 a2=O_WRONLY|O_CREAT|O_NOCTTY|O_APPEND|O_CLOEXEC a3=0x1b6 items=1 ppid=1 pid=1717 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=mpd exe=/usr/bin/mpd subj=system_u:system_r:mpd_t:s0 key=(null) type=AVC msg=audit(06/04/2018 08:53:29.736:233) : avc: denied { dac_override } for pid=1717 comm=mpd capability=dac_override scontext=system_u:system_r:mpd_t:s0 tcontext=system_u:system_r:mpd_t:s0 tclass=capability permissive=0 ---- # ls -ild /var/log/mpd/ 9870514 drwxr-xr-x. 2 mpd mpd 6 Mar 9 02:22 /var/log/mpd/ # ls -ali /var/log/mpd/ total 4 9870514 drwxr-xr-x. 2 mpd mpd 6 Mar 9 02:22 . 16797836 drwxr-xr-x. 10 root root 4096 Jun 4 08:52 .. #
selinux-policy-3.14.1-36.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-1050fb248b
selinux-policy-3.14.1-36.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-1050fb248b
selinux-policy-3.14.1-36.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.