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SUSE Linux Micro 5.2 Kernel Important Update 2026-1575-1 CVE-2026-23103

suse
Calendar Grey April 23, 2026
Dist Suse Esm H88
SUSE kernel update resolves seven important issues; ensure to reboot after installation.
An update that solves seven vulnerabilities can now be installed.

Summary

## The SUSE Linux Enterprise 15 SP3 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: * CVE-2025-38234: sched/rt: Fix race in push_rt_task (bsc#1246057). * CVE-2026-23103: ipvlan: Make the addrs_lock be per port (bsc#1257773). * CVE-2026-23243: RDMA/umad: Reject negative data_len in ib_umad_write (bsc#1259797). * CVE-2026-23272: netfilter: nf_tables: unconditionally bump set->nelems before insertion (bsc#1260009). * CVE-2026-23274: netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels (bsc#1260005). * CVE-2026-23293: net: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled (bsc#1260486). * CVE-2026-23398: icmp: fix NULL pointer dereference in icmp_tag_validation() (bsc#1260730).

Topics%20covered

Topics Covered

security advisory security issue SuSE remote access important kernel

References

* bsc#1246057

* bsc#1257773

* bsc#1259797

* bsc#1260005

* bsc#1260009

* bsc#1260486

* bsc#1260730

Cross-

* CVE-2025-38234

* CVE-2026-23103

* CVE-2026-23243

* CVE-2026-23272

* CVE-2026-23274

* CVE-2026-23293

* CVE-2026-23398

CVSS scores:

* CVE-2025-38234 ( SUSE ): 5.7

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

* CVE-2025-38234 ( SUSE ): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2025-38234 ( NVD ): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-23103 ( SUSE ): 6.8

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

* CVE-2026-23103 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-23103 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1575-1
Release Date: 2026-04-23T15:53:10Z
Rating: important

Topics%20covered

Topics Covered

security advisory security issue SuSE remote access important kernel

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