Security update for kubernetes1.18

Announcement ID:	SUSE-SU-2025:02977-1
Release Date:	2025-08-25T12:18:40Z
Rating:	important
References:	bsc#1182185 bsc#1246989
Cross-References:	CVE-2021-3121
CVSS scores:	CVE-2021-3121 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2021-3121 ( NVD ): 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Affected Products:	openSUSE Leap 15.6 SUSE Enterprise Storage 7.1 SUSE Linux Enterprise High Performance Computing 15 SP3 SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 SUSE Linux Enterprise High Performance Computing LTSS 15 SP3 SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 SUSE Linux Enterprise Server 15 SP3 SUSE Linux Enterprise Server 15 SP3 LTSS SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server 15 SP4 LTSS SUSE Linux Enterprise Server for SAP Applications 15 SP3 SUSE Linux Enterprise Server for SAP Applications 15 SP4

An update that solves one vulnerability and has one security fix can now be installed.

Description:

This update for kubernetes1.18 fixes the following issues:

• Update to version 1.18.20:
• CVE-2021-3121: Fixed a lack of certain index validation in plugin/unmarshal/unmarshal.go. (bsc#1182185)

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

• SUSE Linux Enterprise Server 15 SP4 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2025-2977=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP3
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP3-2025-2977=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2025-2977=1
• SUSE Enterprise Storage 7.1
  zypper in -t patch SUSE-Storage-7.1-2025-2977=1
• openSUSE Leap 15.6
  zypper in -t patch openSUSE-SLE-15.6-2025-2977=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP3
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP3-LTSS-2025-2977=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2025-2977=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2025-2977=1
• SUSE Linux Enterprise Server 15 SP3 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP3-LTSS-2025-2977=1

Package List:

• SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
  • kubernetes1.18-client-1.18.20-150200.5.25.1
  • kubernetes1.18-client-common-1.18.20-150200.5.25.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP3 (ppc64le x86_64)
  • kubernetes1.18-client-1.18.20-150200.5.25.1
  • kubernetes1.18-client-common-1.18.20-150200.5.25.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
  • kubernetes1.18-client-1.18.20-150200.5.25.1
  • kubernetes1.18-client-common-1.18.20-150200.5.25.1
• SUSE Enterprise Storage 7.1 (aarch64 x86_64)
  • kubernetes1.18-client-1.18.20-150200.5.25.1
  • kubernetes1.18-client-common-1.18.20-150200.5.25.1
• openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
  • kubernetes1.18-client-1.18.20-150200.5.25.1
  • kubernetes1.18-client-common-1.18.20-150200.5.25.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP3 (aarch64 x86_64)
  • kubernetes1.18-client-1.18.20-150200.5.25.1
  • kubernetes1.18-client-common-1.18.20-150200.5.25.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64)
  • kubernetes1.18-client-1.18.20-150200.5.25.1
  • kubernetes1.18-client-common-1.18.20-150200.5.25.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64)
  • kubernetes1.18-client-1.18.20-150200.5.25.1
  • kubernetes1.18-client-common-1.18.20-150200.5.25.1
• SUSE Linux Enterprise Server 15 SP3 LTSS (aarch64 ppc64le s390x x86_64)
  • kubernetes1.18-client-1.18.20-150200.5.25.1
  • kubernetes1.18-client-common-1.18.20-150200.5.25.1

References:

• https://www.suse.com/security/cve/CVE-2021-3121.html
• https://bugzilla.suse.com/show_bug.cgi?id=1182185
• https://bugzilla.suse.com/show_bug.cgi?id=1246989