Fedora Account System
Red Hat Associate
Red Hat Customer
Description of problem: Confined users cannot log in to graphical session: Version-Release number of selected component (if applicable): selinux-policy-3.14.5-11.fc32.noarch lightdm-1.30.0-3.fc32.x86_64 How reproducible: always Steps to Reproduce: 1. Log into the graphical environment as a confined user Actual results: An error message appears One of the AVCs logged: ---- type=PROCTITLE msg=audit(11/01/19 15:54:31.833:957) : proctitle=/usr/bin/iceauth source /tmp/.xfsm-ICE-L6Y49Z type=PATH msg=audit(11/01/19 15:54:31.833:957) : item=0 name=/run/user/1005/ inode=335392 dev=00:28 mode=dir,700 ouid=user ogid=user rdev=00:00 obj=system_u:object_r:user_tmp_t:s0 nametype=PARENT cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(11/01/19 15:54:31.833:957) : cwd=/home/user type=SYSCALL msg=audit(11/01/19 15:54:31.833:957) : arch=x86_64 syscall=creat success=no exit=EACCES(Permission denied) a0=0x7ffdc95d5c20 a1=0666 a2=0x0 a3=0x560abf2fd2a0 items=1 ppid=4303 pid=4398 auid=user uid=user gid=user euid=user suid=user fsuid=user egid=user sgid=user fsgid=user tty=(none) ses=53 comm=iceauth exe=/usr/bin/iceauth subj=user_u:user_r:iceauth_t:s0 key=(null) type=AVC msg=audit(11/01/19 15:54:31.833:957) : avc: denied { write } for pid=4398 comm=iceauth name=/ dev="tmpfs" ino=335392 scontext=user_u:user_r:iceauth_t:s0 tcontext=system_u:object_r:user_tmp_t:s0 tclass=dir permissive=0 Expected results: User logs in, no AVC Additional info: Likewise for staff; sysadm cannot log in either, but the whole process is much faster and no error appears.
This local policy module helped with logging in: # cat local_iceauth.cil (allow iceauth_t user_tmp_t (dir (write add_name remove_name))) (allow iceauth_t user_tmp_t (file (create link unlink))) (allow pulseaudio_t user_t (unix_dgram_socket (sendto))) (allow user_t pulseaudio_t (process2 (nnp_transition))
This bug appears to have been reported against 'rawhide' during the Fedora 32 development cycle. Changing version to 32.
PR: https://github.com/fedora-selinux/selinux-policy-contrib/pull/346
Also after login to graphic session appears these AVCs: ---- time->Fri Oct 23 13:39:22 2020 type=AVC msg=audit(1603453162.466:525): avc: denied { setsched } for pid=6383 comm="gnome-keyring-d" scontext=staff_u:staff_r:staff_gkeyringd_t:s0-s0:c0.c1023 tcontext=staff_u:staff_r:staff_gkeyringd_t:s0-s0:c0.c1023 tclass=process permissive=1 ---- time->Fri Oct 23 13:40:16 2020 type=AVC msg=audit(1603453216.975:550): avc: denied { signal } for pid=6373 comm="systemd" scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=staff_u:staff_r:mount_t:s0-s0:c0.c1023 tclass=process permissive=1 for user and sysadm appears similar AVCs.
Merged to rawhide and backported to F33.
FEDORA-2021-4d5b1e1f06 has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2021-4d5b1e1f06
FEDORA-2021-4d5b1e1f06 has been pushed to the Fedora 33 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-4d5b1e1f06` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-4d5b1e1f06 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2021-4d5b1e1f06 has been pushed to the Fedora 33 stable repository. If problem still persists, please make note of it in this bug report.