Bug 2415075 - SELinux is preventing blocking-1 from 'connectto' accesses on the unix_stream_socket /run/systemd/userdb/io.systemd.Home.
Summary: SELinux is preventing blocking-1 from 'connectto' accesses on the unix_stream...
Keywords:
Status: CLOSED DUPLICATE of bug 2408906
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: 43
Hardware: x86_64
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Zdenek Pytela
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: abrt_hash:afcae08b80e28990282a615e2d7...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-11-14 19:38 UTC by Matt Fagnani
Modified: 2025-11-18 21:17 UTC (History)
8 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2025-11-18 16:26:57 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)
File: os_info (712 bytes, text/plain)
2025-11-14 19:38 UTC, Matt Fagnani
no flags Details
File: description (2.07 KB, text/plain)
2025-11-14 19:38 UTC, Matt Fagnani
no flags Details

Description Matt Fagnani 2025-11-14 19:38:26 UTC
Description of problem:
I started Plasma 6.5.2 on Wayland in a Fedora 43 KDE installation. I ran Dolphin. I selected the Trash folder on the left bar in Dolphin which had some deleted videos. I moved the cursor over the video files. There were repeated SELinux denial notifications shown. bwrap was denied the sys admin capability. blocking-1 and blocking-2 were denied connecting to /run/systemd/userdb/io.systemd.Home.

Nov 14 11:50:49 audit[12549]: AVC avc:  denied  { sys_admin } for  pid=12549 comm="bwrap" capability=21  scontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tclass=cap_userns permissive=0
Nov 14 11:50:49 audit[12513]: AVC avc:  denied  { connectto } for  pid=12513 comm="blocking-1" path="/run/systemd/userdb/io.systemd.Home" scontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tcontext=system_u:system_r:systemd_homed_t:s0 tclass=unix_stream_socket permissive=0
...
Nov 14 11:50:51 audit[12672]: AVC avc:  denied  { sys_admin } for  pid=12672 comm="bwrap" capability=21  scontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tclass=cap_userns permissive=0
Nov 14 11:50:51 audit[12658]: AVC avc:  denied  { connectto } for  pid=12658 comm="blocking-2" path="/run/systemd/userdb/io.systemd.Home" scontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tcontext=system_u:system_r:systemd_homed_t:s0 tclass=unix_stream_socket permissive=0

No thumbnails were shown for the videos. I guess that the denials were due to the thumbnails trying to be created given the thumb_t labels. I had previously seen similar denials when doing the same thing. The denials of blocking-1 and blocking-2 to connecting to /run/systemd/userdb/io.systemd.Home started after I updated to selinux-policy-42.15-1.fc43.
SELinux is preventing blocking-1 from 'connectto' accesses on the unix_stream_socket /run/systemd/userdb/io.systemd.Home.

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that blocking-1 should be allowed connectto access on the io.systemd.Home unix_stream_socket 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 'blocking-1' --raw | audit2allow -M my-blocking1
# semodule -X 300 -i my-blocking1.pp

Additional Information:
Source Context                unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023
Target Context                system_u:system_r:systemd_homed_t:s0
Target Objects                /run/systemd/userdb/io.systemd.Home [
                              unix_stream_socket ]
Source                        blocking-1
Source Path                   blocking-1
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
SELinux Policy RPM            selinux-policy-targeted-42.15-1.fc43.noarch
Local Policy RPM              selinux-policy-targeted-42.15-1.fc43.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 6.17.7-300.fc43.x86_64 #1 SMP
                              PREEMPT_DYNAMIC Sun Nov 2 15:30:09 UTC 2025 x86_64
Alert Count                   16
First Seen                    2025-11-14 11:50:49 EST
Last Seen                     2025-11-14 11:51:01 EST
Local ID                      8fedc037-362b-4142-ba4a-004dbefebadf

Raw Audit Messages
type=AVC msg=audit(1763139061.112:568): avc:  denied  { connectto } for  pid=13188 comm="blocking-1" path="/run/systemd/userdb/io.systemd.Home" scontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tcontext=system_u:system_r:systemd_homed_t:s0 tclass=unix_stream_socket permissive=0


Hash: blocking-1,thumb_t,systemd_homed_t,unix_stream_socket,connectto

Version-Release number of selected component:
selinux-policy-targeted-42.15-1.fc43.noarch

Additional info:
reporter:       libreport-2.17.15
hashmarkername: setroubleshoot
type:           libreport
kernel:         6.17.7-300.fc43.x86_64
component:      selinux-policy
package:        selinux-policy-targeted-42.15-1.fc43.noarch
reason:         SELinux is preventing blocking-1 from 'connectto' accesses on the unix_stream_socket /run/systemd/userdb/io.systemd.Home.
component:      selinux-policy

Comment 1 Matt Fagnani 2025-11-14 19:38:29 UTC
Created attachment 2114439 [details]
File: os_info

Comment 2 Matt Fagnani 2025-11-14 19:38:30 UTC
Created attachment 2114440 [details]
File: description

Comment 3 Zdenek Pytela 2025-11-18 16:26:57 UTC

*** This bug has been marked as a duplicate of bug 2408906 ***

Comment 4 Matt Fagnani 2025-11-18 21:17:58 UTC
/run/systemd/userdb/io.systemd.Home has the label systemd_homed_t, but in bug 2408906 io.systemd.DynamicUser has the label systemd_userdbd_runtime_t. This denial involving /run/systemd/userdb/io.systemd.Home started with selinux-policy-42.15-1.fc43 which had the patch for bug 2408906. Thanks.


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