Bug 1754411
| Summary: | SELinux prevents tgtd from stat()-ing infiniband devices | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Milos Malik <mmalik> |
| Component: | selinux-policy | Assignee: | Zdenek Pytela <zpytela> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 34 | CC: | dwalsh, lvrabec, mgrepl, plautrba, zpytela |
| Target Milestone: | --- | Keywords: | Reopened, Triaged |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | selinux-policy-34.7-1.fc34 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-05-16 02:02:18 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: | |||
Please, I need info about denials when you run SELinux in permissive mode. Thanks, Patrik Unable to reproduce it. Patrik Caught in enforcing mode:
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type=PROCTITLE msg=audit(04/30/2021 07:15:43.862:259) : proctitle=/usr/sbin/tgtd -f
type=PATH msg=audit(04/30/2021 07:15:43.862:259) : item=0 name=/dev/infiniband/uverbs2 inode=500 dev=00:05 mode=character,666 ouid=root ogid=root rdev=e7:c2 obj=system_u:object_r:infiniband_device_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
type=CWD msg=audit(04/30/2021 07:15:43.862:259) : cwd=/
type=SYSCALL msg=audit(04/30/2021 07:15:43.862:259) : arch=x86_64 syscall=newfstatat success=no exit=EACCES(Permission denied) a0=0xffffff9c a1=0xf04c70 a2=0x7ffe74f19da0 a3=0x0 items=1 ppid=1 pid=42630 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=tgtd exe=/usr/sbin/tgtd subj=system_u:system_r:tgtd_t:s0 key=(null)
type=AVC msg=audit(04/30/2021 07:15:43.862:259) : avc: denied { getattr } for pid=42630 comm=tgtd path=/dev/infiniband/uverbs2 dev="devtmpfs" ino=500 scontext=system_u:system_r:tgtd_t:s0 tcontext=system_u:object_r:infiniband_device_t:s0 tclass=chr_file permissive=0
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Caught in permissive mode:
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type=PROCTITLE msg=audit(04/30/2021 07:17:17.892:272) : proctitle=/usr/sbin/tgtd -f
type=PATH msg=audit(04/30/2021 07:17:17.892:272) : item=0 name=/dev/infiniband/uverbs2 inode=500 dev=00:05 mode=character,666 ouid=root ogid=root rdev=e7:c2 obj=system_u:object_r:infiniband_device_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
type=CWD msg=audit(04/30/2021 07:17:17.892:272) : cwd=/
type=SYSCALL msg=audit(04/30/2021 07:17:17.892:272) : arch=x86_64 syscall=newfstatat success=yes exit=0 a0=0xffffff9c a1=0x1afdb00 a2=0x7ffc1c274d80 a3=0x0 items=1 ppid=1 pid=57646 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=tgtd exe=/usr/sbin/tgtd subj=system_u:system_r:tgtd_t:s0 key=(null)
type=AVC msg=audit(04/30/2021 07:17:17.892:272) : avc: denied { getattr } for pid=57646 comm=tgtd path=/dev/infiniband/uverbs2 dev="devtmpfs" ino=500 scontext=system_u:system_r:tgtd_t:s0 tcontext=system_u:object_r:infiniband_device_t:s0 tclass=chr_file permissive=1
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type=PROCTITLE msg=audit(04/30/2021 07:17:17.956:273) : proctitle=/usr/sbin/tgtd -f
type=PATH msg=audit(04/30/2021 07:17:17.956:273) : item=0 name=/dev/infiniband/rdma_cm inode=547 dev=00:05 mode=character,666 ouid=root ogid=root rdev=0a:7d obj=system_u:object_r:infiniband_device_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
type=CWD msg=audit(04/30/2021 07:17:17.956:273) : cwd=/
type=SYSCALL msg=audit(04/30/2021 07:17:17.956:273) : arch=x86_64 syscall=openat success=yes exit=6 a0=0xffffff9c a1=0x1afee40 a2=O_RDWR|O_CLOEXEC a3=0x0 items=1 ppid=1 pid=57646 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=tgtd exe=/usr/sbin/tgtd subj=system_u:system_r:tgtd_t:s0 key=(null)
type=AVC msg=audit(04/30/2021 07:17:17.956:273) : avc: denied { open } for pid=57646 comm=tgtd path=/dev/infiniband/rdma_cm dev="devtmpfs" ino=547 scontext=system_u:system_r:tgtd_t:s0 tcontext=system_u:object_r:infiniband_device_t:s0 tclass=chr_file permissive=1
type=AVC msg=audit(04/30/2021 07:17:17.956:273) : avc: denied { read write } for pid=57646 comm=tgtd name=rdma_cm dev="devtmpfs" ino=547 scontext=system_u:system_r:tgtd_t:s0 tcontext=system_u:object_r:infiniband_device_t:s0 tclass=chr_file permissive=1
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I've submitted a Fedora PR to address the issue: https://github.com/fedora-selinux/selinux-policy/pull/737 FEDORA-2021-ec18a84d86 has been submitted as an update to Fedora 34. https://bodhi.fedoraproject.org/updates/FEDORA-2021-ec18a84d86 FEDORA-2021-ec18a84d86 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-ec18a84d86` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-ec18a84d86 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2021-ec18a84d86 has been pushed to the Fedora 34 stable repository. If problem still persists, please make note of it in this bug report. |
Description of problem: * tgtd triggers SELinux denials when accessing infiniband devices Version-Release number of selected component (if applicable): selinux-policy-3.14.3-45.fc30.noarch selinux-policy-targeted-3.14.3-45.fc30.noarch iscsi-initiator-utils-6.2.0.876-8.gitf3c8e90.fc30.x86_64 scsi-target-utils-1.0.70-8.fc30.x86_64 How reproducible: * always Steps to Reproduce: 1. get a Fedora 30 machine (targeted policy is active) which has some infiniband devices attached 2. configure tgtd and iscsid so that they cooperate on 1 machine 3. # iscsiadm --mode node --portal <ip-address> --login 4. # iscsiadm --mode node --portal <ip-address> --logout Actual results: ---- type=PROCTITLE msg=audit(09/20/2019 14:50:51.138:2547) : proctitle=/usr/sbin/tgtd -f type=PATH msg=audit(09/20/2019 14:50:51.138:2547) : item=0 name=/dev/infiniband/uverbs0 inode=4591 dev=00:06 mode=character,666 ouid=root ogid=root rdev=e7:c0 obj=system_u:object_r:infiniband_device_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(09/20/2019 14:50:51.138:2547) : cwd=/ type=SYSCALL msg=audit(09/20/2019 14:50:51.138:2547) : arch=x86_64 syscall=stat success=no exit=EACCES(Permission denied) a0=0x2177500 a1=0x7fff410df3a0 a2=0x7fff410df3a0 a3=0x0 items=1 ppid=1 pid=41306 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=tgtd exe=/usr/sbin/tgtd subj=system_u:system_r:tgtd_t:s0 key=(null) type=AVC msg=audit(09/20/2019 14:50:51.138:2547) : avc: denied { getattr } for pid=41306 comm=tgtd path=/dev/infiniband/uverbs0 dev="devtmpfs" ino=4591 scontext=system_u:system_r:tgtd_t:s0 tcontext=system_u:object_r:infiniband_device_t:s0 tclass=chr_file permissive=0 ---- type=PROCTITLE msg=audit(09/20/2019 14:50:51.138:2548) : proctitle=/usr/sbin/tgtd -f type=PATH msg=audit(09/20/2019 14:50:51.138:2548) : item=0 name=/dev/infiniband/uverbs1 inode=4592 dev=00:06 mode=character,666 ouid=root ogid=root rdev=e7:c1 obj=system_u:object_r:infiniband_device_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(09/20/2019 14:50:51.138:2548) : cwd=/ type=SYSCALL msg=audit(09/20/2019 14:50:51.138:2548) : arch=x86_64 syscall=stat success=no exit=EACCES(Permission denied) a0=0x2177500 a1=0x7fff410df3a0 a2=0x7fff410df3a0 a3=0x217f710 items=1 ppid=1 pid=41306 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=tgtd exe=/usr/sbin/tgtd subj=system_u:system_r:tgtd_t:s0 key=(null) type=AVC msg=audit(09/20/2019 14:50:51.138:2548) : avc: denied { getattr } for pid=41306 comm=tgtd path=/dev/infiniband/uverbs1 dev="devtmpfs" ino=4592 scontext=system_u:system_r:tgtd_t:s0 tcontext=system_u:object_r:infiniband_device_t:s0 tclass=chr_file permissive=0 ---- Expected results: * no SELinux denials