Bug 1690291
| Summary: | SELinux is preventing /usr/bin/qemu-ga from read access on mounted point | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | yafu <yafu> |
| Component: | selinux-policy | Assignee: | Lukas Vrabec <lvrabec> |
| Status: | CLOSED DUPLICATE | QA Contact: | Milos Malik <mmalik> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 8.0 | CC: | fjin, lizhu, lvrabec, mmalik, plautrba, ssekidde, xuzhang, zpytela |
| Target Milestone: | rc | Keywords: | Regression |
| Target Release: | 8.2 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-09-03 19:02:05 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: | |||
Hi, It looks like the /mnt directory has invalid label: The unlabeled_t label is usually displayed when a file was created in SELinux disabled state or when its actual label does not currently exist. Along with the restorecon plugin suggestion, you can fix the label with a single command: # /sbin/restorecon -v /mnt However, for files and directories which are a part of base system it is very unusual. Did you install the system with SELinux enabled as it is by default? Are you able to reproduce the issue? (In reply to Zdenek Pytela from comment #1) > Hi, > > It looks like the /mnt directory has invalid label: The unlabeled_t label is > usually displayed when a file was created in SELinux disabled state or when > its actual label does not currently exist. Along with the restorecon plugin > suggestion, you can fix the label with a single command: > > # /sbin/restorecon -v /mnt > > However, for files and directories which are a part of base system it is > very unusual. Did you install the system with SELinux enabled as it is by > default? Are you able to reproduce the issue? Yes, before mount block device to /mnt, the label of /mnt is: #ll -dZ /mnt/ drwxr-xr-x. 2 root root system_u:object_r:mnt_t:s0 6 Aug 12 2018 /mnt/ After mount block device to /mnt, the label of /mnt is: # ll -dZ /mnt/ drwxr-xr-x. 2 root root system_u:object_r:unlabeled_t:s0 22 Mar 19 15:13 /mnt/ What is the filesystem on the device mounted to /mnt? How was it created, does it support SELinux? (In reply to Zdenek Pytela from comment #3) > What is the filesystem on the device mounted to /mnt? How was it created, > does it support SELinux? I tested ext4 and xfs, created by mkfs.XXX /dev/XXX. And both can reproduce the issue. *** This bug has been marked as a duplicate of bug 1747960 *** |
DSELinux is preventing /usr/bin/qemu-ga from read access on the directory /mnt. ***** Plugin restorecon (99.5 confidence) suggests ************************ If you want to fix the label. /mnt default label should be mnt_t. Then you can run restorecon. The access attempt may have been stopped due to insufficient permissions to access a parent directory in which case try to change the following command accordingly. Do # /sbin/restorecon -v /mnt ***** Plugin catchall (1.49 confidence) suggests ************************** If you believe that qemu-ga should be allowed read access on the mnt directory 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 'qemu-ga' --raw | audit2allow -M my-qemuga # semodule -X 300 -i my-qemuga.pp Additional Information: Source Context system_u:system_r:virt_qemu_ga_t:s0 Target Context system_u:object_r:unlabeled_t:s0 Target Objects /mnt [ dir ] Source qemu-ga Source Path /usr/bin/qemu-ga Port <Unknown> Host localhost.localdomain Source RPM Packages Target RPM Packages filesystem-3.8-2.el8.x86_64 Policy RPM selinux-policy-3.14.1-61.el8.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name localhost.localdomain Platform Linux localhost.localdomain 4.18.0-80.el8.x86_64 #1 SMP Wed Mar 13 12:02:46 UTC 2019 x86_64 x86_64 Alert Count 47 First Seen 2019-03-19 03:14:15 EDT Last Seen 2019-03-19 04:44:59 EDT Local ID aed26cc9-3f4d-42cc-8f9f-a33ac2c4bf53 Raw Audit Messages type=AVC msg=audit(1552985099.106:128): avc: denied { read } for pid=875 comm="qemu-ga" name="/" dev="sdb" ino=2 scontext=system_u:system_r:virt_qemu_ga_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=0 Hash: qemu-ga,virt_qemu_ga_t,unlabeled_t,dir,read Additional info: 1.It works well with selinux-policy-3.13.1-229.el7.noarch.