Bug 1583830
| Summary: | SELinux prevents systemd-networkd from reading/writing tun tap device | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Milos Malik <mmalik> |
| Component: | selinux-policy | Assignee: | Lukas Vrabec <lvrabec> |
| Status: | CLOSED ERRATA | QA Contact: | Milos Malik <mmalik> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.6 | CC: | lvrabec, mgrepl, mmalik, plautrba, ssekidde |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-10-30 10:04:31 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2018:3111 |
Description of problem: It is not possible to create tun tap device with SELinux enabled. Version-Release number of selected component (if applicable): selinux-policy-3.13.1-201.el7.noarch selinux-policy-devel-3.13.1-201.el7.noarch selinux-policy-minimum-3.13.1-201.el7.noarch selinux-policy-mls-3.13.1-201.el7.noarch selinux-policy-targeted-3.13.1-201.el7.noarch systemd-219-57.el7.x86_64 systemd-journal-gateway-219-57.el7.x86_64 systemd-libs-219-57.el7.x86_64 systemd-networkd-219-57.el7.x86_64 systemd-python-219-57.el7.x86_64 systemd-resolved-219-57.el7.x86_64 systemd-sysv-219-57.el7.x86_64 How reproducible: * always Steps to Reproduce: 0.# mkdir -p /etc/systemd/network 1.# cat /etc/systemd/network/25-tun.netdev [NetDev] Name=tun99 Kind=tun [Tun] MultiQueue=true PacketInfo=true 2.# systemctl daemon-reload 3.# systemctl restart systemd-networkd Actual results (enforcing mode): ---- type=PROCTITLE msg=audit(05/29/2018 15:45:19.840:497) : proctitle=/usr/lib/systemd/systemd-networkd type=PATH msg=audit(05/29/2018 15:45:19.840:497) : item=0 name=/dev/net/tun inode=12708 dev=00:05 mode=character,666 ouid=root ogid=root rdev=0a:c8 obj=system_u:object_r:tun_tap_device_t:s0 objtype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 type=CWD msg=audit(05/29/2018 15:45:19.840:497) : cwd=/ type=SYSCALL msg=audit(05/29/2018 15:45:19.840:497) : arch=x86_64 syscall=open success=no exit=EACCES(Permission denied) a0=0x55a2e002dfba a1=O_RDWR a2=0x0 a3=0x55a2e03ec180 items=1 ppid=1 pid=10681 auid=unset uid=systemd-network gid=systemd-network euid=systemd-network suid=systemd-network fsuid=systemd-network egid=systemd-network sgid=systemd-network fsgid=systemd-network tty=(none) ses=unset comm=systemd-network exe=/usr/lib/systemd/systemd-networkd subj=system_u:system_r:systemd_networkd_t:s0 key=(null) type=AVC msg=audit(05/29/2018 15:45:19.840:497) : avc: denied { read write } for pid=10681 comm=systemd-network name=tun dev="devtmpfs" ino=12708 scontext=system_u:system_r:systemd_networkd_t:s0 tcontext=system_u:object_r:tun_tap_device_t:s0 tclass=chr_file permissive=0 ---- Expected results: * no SELinux denials