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SUSE Linux Micro 6.2 Important Kernel Security Fix SUSE-SU-2026-21524-1

suse
Calendar Grey May 11, 2026
Dist Suse Esm H88
SUSE Linux kernel update fixes important security issues with installation instructions for Micro 6.2.
An update that solves three vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.28.1 fixes various security issues The following security issues were fixed: * CVE-2026-23437: net: shaper: protect late read accesses to the hierarchy (bsc#1261845). * CVE-2026-31406: xfrm: Fix work re-schedule after cancel in xfrm_nat_keepalive_net_fini() (bsc#1261630). * CVE-2026-31431: crypto: algif_aead - Revert to operating out-of-place (bsc#1263689). ## 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 Micro 6.2 zypper in -t patch SUSE-SL-Micro-6.2-693=1 ## Package List: * SUSE Linux Micro 6.2 (ppc64le s390x x86_64)

Topics%20covered

Topics Covered

security advisory SuSE important kernel installation instructions security issues

References

* bsc#1261630

* bsc#1261845

* bsc#1263689

Cross-

* CVE-2026-23437

* CVE-2026-31406

* CVE-2026-31431

CVSS scores:

* CVE-2026-23437 ( SUSE ): 7.3

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2026-23437 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-23437 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-23437 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-31406 ( SUSE ): 7.3

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2026-31406 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-31406 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-31431 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21524-1
Release Date: 2026-05-05T20:01:32Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE important kernel installation instructions security issues

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