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SUSE Linux Micro Important Kernel Security Update 2026-22733-1

suse
Calendar Grey July 22, 2026
Scroller Suse
This security update addresses critical issues in the SUSE Linux Micro kernel, applying fixes for 21 potential threats.
A security update for SUSE Linux Enterprise Micro 6.0 addresses 21 vulnerabilities, enhancing system protection by fixing issues related to various components of the kernel.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.4.0-42.1 fixes various security issues The following security issues were fixed: * CVE-2026-23393: bridge: cfm: Fix race condition in peer_mep deletion (bsc#1260524). * CVE-2026-31505: iavf: fix out-of-bounds writes in iavf_get_ethtool_stats() (bsc#1263094). * CVE-2026-31533: net/tls: fix use-after-free in -EBUSY error path of tls_do_encryption (bsc#1262759). * CVE-2026-31586: mm: blk-cgroup: fix use-after-free in cgwb_release_workfn() (bsc#1263177). * CVE-2026-31685: netfilter: ip6t_eui64: reject invalid MAC header for all packets (bsc#1263670). * CVE-2026-43025: netfilter: ctnetlink: ignore explicit helper on new expectations (bsc#1264253). * CVE-2026-43027: netfilter: nf_conntrack_helper: pass helper to expect

Topics%20covered

Topics Covered

security advisory security issue SuSE DoS important kernel

References

* bsc#1260524

* bsc#1262759

* bsc#1263094

* bsc#1263177

* bsc#1263670

* bsc#1264252

* bsc#1264253

* bsc#1264567

* bsc#1264849

* bsc#1265117

* bsc#1265197

* bsc#1265945

* bsc#1266015

* bsc#1266265

* bsc#1267206

* bsc#1267698

* bsc#1267723

* bsc#1267893

* bsc#1268662

* bsc#1269023

* bsc#1269495

Cross-

* CVE-2026-23393

* CVE-2026-31505

* CVE-2026-31533

* CVE-2026-31586

* CVE-2026-31685

* CVE-2026-43025

* CVE-2026-43027

* CVE-2026-43037

* CVE-2026-43120

* CVE-2026-43190

* CVE-2026-43366

* CVE-2026-43494

* CVE-2026-43501

* CVE-2026-45970

* CVE-2026-46120

* CVE-2026-46173

* CVE-2026-46227

* CVE-2026-46243

* CVE-2026-52909

* CVE-2026-52943

* CVE-2026-53362

CVSS scores:

* CVE-2026-23393 ( 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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:22733-1
Release Date: 2026-07-16T08:59:27Z
Rating: important

Topics%20covered

Topics Covered

security advisory security issue SuSE DoS important kernel

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