Fedora Account System
Red Hat Associate
Red Hat Customer
Description of problem: * the usbmuxd service seems to run successfully, but few SELinux denials appear Version-Release number of selected component (if applicable): selinux-policy-3.14.8-7.fc35.noarch selinux-policy-targeted-3.14.8-7.fc35.noarch usbmuxd-1.1.1-5.fc35.x86_64 How reproducible: * always Steps to Reproduce: 1. get a Fedora rawhide machine (targeted policy is active) 2. start the usbmuxd service 3. search for SELinux denials Actual results: ---- type=PROCTITLE msg=audit(05/12/2021 04:12:22.764:564) : proctitle=/usr/sbin/usbmuxd --user usbmuxd --systemd type=PATH msg=audit(05/12/2021 04:12:22.764:564) : item=0 name=/proc/1/environ nametype=UNKNOWN cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(05/12/2021 04:12:22.764:564) : cwd=/ type=SYSCALL msg=audit(05/12/2021 04:12:22.764:564) : arch=x86_64 syscall=openat success=no exit=EACCES(Permission denied) a0=0xffffff9c a1=0x7ffcb96400c0 a2=O_RDONLY|O_CLOEXEC a3=0x0 items=1 ppid=1 pid=2983 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=usbmuxd exe=/usr/sbin/usbmuxd subj=system_u:system_r:usbmuxd_t:s0 key=(null) type=AVC msg=audit(05/12/2021 04:12:22.764:564) : avc: denied { search } for pid=2983 comm=usbmuxd name=1 dev="proc" ino=13279 scontext=system_u:system_r:usbmuxd_t:s0 tcontext=system_u:system_r:init_t:s0 tclass=dir permissive=0 ---- type=PROCTITLE msg=audit(05/12/2021 04:12:22.766:565) : proctitle=/usr/sbin/usbmuxd --user usbmuxd --systemd type=PATH msg=audit(05/12/2021 04:12:22.766:565) : item=0 name=/sys/fs/cgroup/ inode=1 dev=00:1b mode=dir,555 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:cgroup_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(05/12/2021 04:12:22.766:565) : cwd=/ type=SYSCALL msg=audit(05/12/2021 04:12:22.766:565) : arch=x86_64 syscall=statfs success=no exit=EACCES(Permission denied) a0=0x7f71491bf515 a1=0x7ffcb9640180 a2=0x7f714a5d4220 a3=0xffffffff items=1 ppid=1 pid=2983 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=usbmuxd exe=/usr/sbin/usbmuxd subj=system_u:system_r:usbmuxd_t:s0 key=(null) type=AVC msg=audit(05/12/2021 04:12:22.766:565) : avc: denied { getattr } for pid=2983 comm=usbmuxd name=/ dev="cgroup2" ino=1 scontext=system_u:system_r:usbmuxd_t:s0 tcontext=system_u:object_r:cgroup_t:s0 tclass=filesystem permissive=0 ---- Expected results: * no SELinux denials Additional info: * the second SELinux denial is already mentioned in BZ#1936705 as fixed, but it still appears
SELinux denials caught in permissive mode: ---- type=PROCTITLE msg=audit(05/12/2021 05:30:08.988:573) : proctitle=/usr/sbin/usbmuxd --user usbmuxd --systemd type=PATH msg=audit(05/12/2021 05:30:08.988:573) : item=0 name=/proc/1/environ inode=13425 dev=00:16 mode=file,400 ouid=root ogid=root rdev=00:00 obj=system_u:system_r:init_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(05/12/2021 05:30:08.988:573) : cwd=/ type=SYSCALL msg=audit(05/12/2021 05:30:08.988:573) : arch=x86_64 syscall=openat success=yes exit=8 a0=0xffffff9c a1=0x7fff33daac20 a2=O_RDONLY|O_CLOEXEC a3=0x0 items=1 ppid=1 pid=3325 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=usbmuxd exe=/usr/sbin/usbmuxd subj=system_u:system_r:usbmuxd_t:s0 key=(null) type=AVC msg=audit(05/12/2021 05:30:08.988:573) : avc: denied { open } for pid=3325 comm=usbmuxd path=/proc/1/environ dev="proc" ino=13425 scontext=system_u:system_r:usbmuxd_t:s0 tcontext=system_u:system_r:init_t:s0 tclass=file permissive=1 type=AVC msg=audit(05/12/2021 05:30:08.988:573) : avc: denied { read } for pid=3325 comm=usbmuxd name=environ dev="proc" ino=13425 scontext=system_u:system_r:usbmuxd_t:s0 tcontext=system_u:system_r:init_t:s0 tclass=file permissive=1 type=AVC msg=audit(05/12/2021 05:30:08.988:573) : avc: denied { search } for pid=3325 comm=usbmuxd name=1 dev="proc" ino=13279 scontext=system_u:system_r:usbmuxd_t:s0 tcontext=system_u:system_r:init_t:s0 tclass=dir permissive=1 ---- type=PROCTITLE msg=audit(05/12/2021 05:30:08.990:574) : proctitle=/usr/sbin/usbmuxd --user usbmuxd --systemd type=PATH msg=audit(05/12/2021 05:30:08.990:574) : item=0 name= inode=13425 dev=00:16 mode=file,400 ouid=root ogid=root rdev=00:00 obj=system_u:system_r:init_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(05/12/2021 05:30:08.990:574) : cwd=/ type=SYSCALL msg=audit(05/12/2021 05:30:08.990:574) : arch=x86_64 syscall=newfstatat success=yes exit=0 a0=0x8 a1=0x7f677b1bd95a a2=0x7fff33daaa20 a3=0x1000 items=1 ppid=1 pid=3325 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=usbmuxd exe=/usr/sbin/usbmuxd subj=system_u:system_r:usbmuxd_t:s0 key=(null) type=AVC msg=audit(05/12/2021 05:30:08.990:574) : avc: denied { getattr } for pid=3325 comm=usbmuxd path=/proc/1/environ dev="proc" ino=13425 scontext=system_u:system_r:usbmuxd_t:s0 tcontext=system_u:system_r:init_t:s0 tclass=file permissive=1 ---- type=PROCTITLE msg=audit(05/12/2021 05:30:08.992:575) : proctitle=/usr/sbin/usbmuxd --user usbmuxd --systemd type=SYSCALL msg=audit(05/12/2021 05:30:08.992:575) : arch=x86_64 syscall=ioctl success=no exit=ENOTTY(Inappropriate ioctl for device) a0=0x8 a1=TCGETS a2=0x7fff33daaaf0 a3=0x1000 items=0 ppid=1 pid=3325 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=usbmuxd exe=/usr/sbin/usbmuxd subj=system_u:system_r:usbmuxd_t:s0 key=(null) type=AVC msg=audit(05/12/2021 05:30:08.992:575) : avc: denied { ioctl } for pid=3325 comm=usbmuxd path=/proc/1/environ dev="proc" ino=13425 ioctlcmd=TCGETS scontext=system_u:system_r:usbmuxd_t:s0 tcontext=system_u:system_r:init_t:s0 tclass=file permissive=1 ---- type=PROCTITLE msg=audit(05/12/2021 05:30:08.993:576) : proctitle=/usr/sbin/usbmuxd --user usbmuxd --systemd type=PATH msg=audit(05/12/2021 05:30:08.993:576) : item=0 name=/sys/fs/cgroup/ inode=1 dev=00:1b mode=dir,555 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:cgroup_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(05/12/2021 05:30:08.993:576) : cwd=/ type=SYSCALL msg=audit(05/12/2021 05:30:08.993:576) : arch=x86_64 syscall=statfs success=yes exit=0 a0=0x7f6779602515 a1=0x7fff33daace0 a2=0x7f677aa17220 a3=0xffffffff items=1 ppid=1 pid=3325 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=usbmuxd exe=/usr/sbin/usbmuxd subj=system_u:system_r:usbmuxd_t:s0 key=(null) type=AVC msg=audit(05/12/2021 05:30:08.993:576) : avc: denied { getattr } for pid=3325 comm=usbmuxd name=/ dev="cgroup2" ino=1 scontext=system_u:system_r:usbmuxd_t:s0 tcontext=system_u:object_r:cgroup_t:s0 tclass=filesystem permissive=1 ----
(In reply to Milos Malik from comment #0) > Description of problem: > * the usbmuxd service seems to run successfully, but few SELinux denials > appear > > Version-Release number of selected component (if applicable): > selinux-policy-3.14.8-7.fc35.noarch > selinux-policy-targeted-3.14.8-7.fc35.noarch Please update to selinux-policy-34.3-1 or newer. The other denials were dontaudited in bz#1932689, but for daemon only whic usbmuxd_t seems not to be.
I've submitted a Fedora PR to address the issue: https://github.com/fedora-selinux/selinux-policy/pull/770
*** Bug 1964993 has been marked as a duplicate of this bug. ***
FEDORA-2021-d8e34dbd6e has been submitted as an update to Fedora 34. https://bodhi.fedoraproject.org/updates/FEDORA-2021-d8e34dbd6e
FEDORA-2021-d8e34dbd6e has been pushed to the Fedora 34 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-d8e34dbd6e` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-d8e34dbd6e See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2021-d8e34dbd6e has been pushed to the Fedora 34 stable repository. If problem still persists, please make note of it in this bug report.