SLED15 (without any Service Pack) is “End of Life”.
https://en.wikipedia.org/wiki/End-of-life_(product)
For security reason you must update to SLED15 SP1.
https://www.suse.com/lifecycle/
You should check every 3 months the support state of your SLED or SLES installation:
Preparation:
[CODE]# su
zypper install zypper-lifecycle-plugin
zypper install lifecycle-data-sle-module-basesystem
zypper install lifecycle-data-sle-module-desktop-applications
zypper install lifecycle-data-sle-module-desktop-productivity[/CODE]
Periodic support check:
[CODE]# su
zypper lifecycle
Product end of support
Codestream: SUSE Linux Enterprise Desktop 15 2028-07-31
SUSE Linux Enterprise Desktop 15 SP1 n/a*
Module end of support
Basesystem Module n/a*
Desktop Applications Module n/a*
Development Tools Module n/a*
Extension end of support
SUSE Linux Enterprise Workstation Extension 15 SP1 n/a*
No packages with end of support different from product.
*) See https://www.suse.com/lifecycle for latest information[/CODE]
Please read carefully chapter 6.1.8 “Showing Life Cycle Information” in SLE Administration Guide:
https://documentation.suse.com/