openSUSE: kubernetes1.18 Important CVE-2021-3121 DoS Threat 2025:02977-1

opensuse

August 25, 2025

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)

Topics Covered

security advisory DoS important OpenSUSE CVE-2021-3121 kubernetes1.18

Patch

## 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...

Read the Full Advisory

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...

Read the Full Advisory

References

* bsc#1182185

* bsc#1246989

## 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

Severity

important

Lowest

Low

Medium

High

Critical

Announcement ID: SUSE-SU-2025:02977-1

Release Date: 2025-08-25T12:18:40Z

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

Topics Covered

security advisory DoS important OpenSUSE CVE-2021-3121 kubernetes1.18

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