Bug 1930992
| Summary: | SELinux is preventing usbmuxd from 'getattr' accesses on the filesystem /sys. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | redhatbugzilla |
| 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: | 33 | CC: | dwalsh, grepl.miroslav, lvrabec, mmalik, omosnace, plautrba, vmojzis, zpytela |
| Target Milestone: | --- | Keywords: | Triaged |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Unspecified | ||
| Whiteboard: | abrt_hash:ab0e8f9e63ea052c844c5df4221c3c77db27c72ca0bcaf89e713d3046eb438a8;VARIANT_ID=cinnamon; | ||
| Fixed In Version: | selinux-policy-3.14.6-35.fc33 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-03-04 20:10:22 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
It is currently being worked on: https://github.com/fedora-selinux/selinux-policy/pull/605 Found on my Fedora 33 machine:
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type=PROCTITLE msg=audit(02/24/2021 21:31:31.624:1621) : proctitle=/usr/sbin/usbmuxd --user usbmuxd --systemd
type=PATH msg=audit(02/24/2021 21:31:31.624:1621) : item=0 name=/sys inode=1 dev=00:16 mode=dir,555 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:sysfs_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
type=CWD msg=audit(02/24/2021 21:31:31.624:1621) : cwd=/
type=SYSCALL msg=audit(02/24/2021 21:31:31.624:1621) : arch=x86_64 syscall=statfs success=no exit=EACCES(Permission denied) a0=0x7f072e113777 a1=0x7ffe6d38eaf0 a2=0x7f072e116fa8 a3=0x1000 items=1 ppid=1 pid=56563 auid=unset uid=usbmuxd gid=usbmuxd euid=usbmuxd suid=usbmuxd fsuid=usbmuxd egid=usbmuxd sgid=usbmuxd fsgid=usbmuxd tty=(none) ses=unset comm=usbmuxd exe=/usr/sbin/usbmuxd subj=system_u:system_r:usbmuxd_t:s0 key=(null)
type=AVC msg=audit(02/24/2021 21:31:31.624:1621) : avc: denied { getattr } for pid=56563 comm=usbmuxd name=/ dev="sysfs" ino=1 scontext=system_u:system_r:usbmuxd_t:s0 tcontext=system_u:object_r:sysfs_t:s0 tclass=filesystem permissive=0
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The only SELinux denial that appeared in permissive mode:
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type=PROCTITLE msg=audit(02/24/2021 21:33:40.667:1647) : proctitle=/usr/sbin/usbmuxd --user usbmuxd --systemd
type=PATH msg=audit(02/24/2021 21:33:40.667:1647) : item=0 name=/sys inode=1 dev=00:16 mode=dir,555 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:sysfs_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0
type=CWD msg=audit(02/24/2021 21:33:40.667:1647) : cwd=/
type=SYSCALL msg=audit(02/24/2021 21:33:40.667:1647) : arch=x86_64 syscall=statfs success=yes exit=0 a0=0x7f3e48821777 a1=0x7ffe01bb87f0 a2=0x7f3e48824fa8 a3=0x1000 items=1 ppid=1 pid=56645 auid=unset uid=usbmuxd gid=usbmuxd euid=usbmuxd suid=usbmuxd fsuid=usbmuxd egid=usbmuxd sgid=usbmuxd fsgid=usbmuxd tty=(none) ses=unset comm=usbmuxd exe=/usr/sbin/usbmuxd subj=system_u:system_r:usbmuxd_t:s0 key=(null)
type=AVC msg=audit(02/24/2021 21:33:40.667:1647) : avc: denied { getattr } for pid=56645 comm=usbmuxd name=/ dev="sysfs" ino=1 scontext=system_u:system_r:usbmuxd_t:s0 tcontext=system_u:object_r:sysfs_t:s0 tclass=filesystem permissive=1
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FEDORA-2021-e9050fdd5c has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2021-e9050fdd5c FEDORA-2021-e9050fdd5c 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-e9050fdd5c` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-e9050fdd5c See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. FEDORA-2021-e9050fdd5c has been pushed to the Fedora 33 stable repository. If problem still persists, please make note of it in this bug report. |
Description of problem: SELinux is preventing usbmuxd from 'getattr' accesses on the filesystem /sys. ***** Plugin catchall (100. confidence) suggests ************************** If you believe that usbmuxd should be allowed getattr access on the sys filesystem 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 'usbmuxd' --raw | audit2allow -M my-usbmuxd # semodule -X 300 -i my-usbmuxd.pp Additional Information: Source Context system_u:system_r:usbmuxd_t:s0 Target Context system_u:object_r:sysfs_t:s0 Target Objects /sys [ filesystem ] Source usbmuxd Source Path usbmuxd Port <Unknown> Host (removed) Source RPM Packages Target RPM Packages filesystem-3.14-3.fc33.x86_64 SELinux Policy RPM selinux-policy-targeted-3.14.6-34.fc33.noarch Local Policy RPM selinux-policy-targeted-3.14.6-34.fc33.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name (removed) Platform Linux (removed) 5.10.15-200.fc33.x86_64 #1 SMP Wed Feb 10 17:46:55 UTC 2021 x86_64 x86_64 Alert Count 1 First Seen 2021-02-19 18:11:20 CST Last Seen 2021-02-19 18:11:20 CST Local ID 832eac22-c7fd-4255-967d-f762957aa46c Raw Audit Messages type=AVC msg=audit(1613779880.30:139): avc: denied { getattr } for pid=940 comm="usbmuxd" name="/" dev="sysfs" ino=1 scontext=system_u:system_r:usbmuxd_t:s0 tcontext=system_u:object_r:sysfs_t:s0 tclass=filesystem permissive=0 Hash: usbmuxd,usbmuxd_t,sysfs_t,filesystem,getattr Version-Release number of selected component: selinux-policy-targeted-3.14.6-34.fc33.noarch Additional info: component: selinux-policy reporter: libreport-2.14.0 hashmarkername: setroubleshoot kernel: 5.10.15-200.fc33.x86_64 type: libreport