I get these in the warning log (several computers running 15.3, recently):
3.4> 2022-08-03T11:14:47.877715+02:00 Telcontar systemd 1 - - Configuration
file /usr/lib/systemd/system/iscsi.service is marked executable. Please remove
executable permission bits. Proceeding anyway.
<3.4> 2022-08-03T11:14:47.877851+02:00 Telcontar systemd 1 - - Configuration
file /usr/lib/systemd/system/iscsid.service is marked executable. Please remove
executable permission bits. Proceeding anyway.
<3.4> 2022-08-03T11:14:47.879040+02:00 Telcontar systemd 1 - - Configuration
file /usr/lib/systemd/system/iscsid.socket is marked executable. Please remove
executable permission bits. Proceeding anyway.
<3.4> 2022-08-03T11:14:47.879313+02:00 Telcontar systemd 1 - - Configuration
file /usr/lib/systemd/system/iscsiuio.service is marked executable. Please
remove executable permission bits. Proceeding anyway.
<3.4> 2022-08-03T11:14:47.880606+02:00 Telcontar systemd 1 - - Configuration
file /usr/lib/systemd/system/iscsiuio.socket is marked executable. Please
remove executable permission bits. Proceeding anyway.
<3.4> 2022-08-03T11:14:48.240258+02:00 Telcontar systemd 1 - - Configuration
file /usr/lib/systemd/system/iscsi-init.service is marked executable. Please
remove executable permission bits. Proceeding anyway.
I can correct that in my system, but an update will revert those.
Telcontar:~ # l /usr/lib/systemd/system/iscsi.service
/usr/lib/systemd/system/iscsid.service /usr/lib/systemd/system/iscsid.socket
/usr/lib/systemd/system/iscsiuio.service
/usr/lib/systemd/system/iscsiuio.socket
/usr/lib/systemd/system/iscsi-init.service
-rwxr-xr-x 1 root root 559 Jun 10 15:25
/usr/lib/systemd/system/iscsi-init.service*
-rwxr-xr-x 1 root root 595 Jun 10 15:25 /usr/lib/systemd/system/iscsi.service*
-rwxr-xr-x 1 root root 418 Jun 10 15:25 /usr/lib/systemd/system/iscsid.service*
-rwxr-xr-x 1 root root 175 Jun 10 15:25 /usr/lib/systemd/system/iscsid.socket*
-rwxr-xr-x 1 root root 410 Jun 10 15:25
/usr/lib/systemd/system/iscsiuio.service*
-rwxr-xr-x 1 root root 165 Jun 10 15:25
/usr/lib/systemd/system/iscsiuio.socket*
Telcontar:~ # chmod a-x /usr/lib/systemd/system/iscsi.service
/usr/lib/systemd/system/iscsid.service /usr/lib/systemd/system/iscsid.socket
/usr/lib/systemd/system/iscsiuio.service
/usr/lib/systemd/system/iscsiuio.socket
/usr/lib/systemd/system/iscsi-init.service
Telcontar:~ # l /usr/lib/systemd/system/iscsi.service
/usr/lib/systemd/system/iscsid.service /usr/lib/systemd/system/iscsid.socket
/usr/lib/systemd/system/iscsiuio.service
/usr/lib/systemd/system/iscsiuio.socket
/usr/lib/systemd/system/iscsi-init.service
-rw-r--r-- 1 root root 559 Jun 10 15:25
/usr/lib/systemd/system/iscsi-init.service
-rw-r--r-- 1 root root 595 Jun 10 15:25 /usr/lib/systemd/system/iscsi.service
-rw-r--r-- 1 root root 418 Jun 10 15:25 /usr/lib/systemd/system/iscsid.service
-rw-r--r-- 1 root root 175 Jun 10 15:25 /usr/lib/systemd/system/iscsid.socket
-rw-r--r-- 1 root root 410 Jun 10 15:25
/usr/lib/systemd/system/iscsiuio.service
-rw-r--r-- 1 root root 165 Jun 10 15:25 /usr/lib/systemd/system/iscsiuio.socket
Telcontar:~ #