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SUSE Linux Micro Kernel Important Security Fix 2026-1557-1

suse
Calendar Grey April 23, 2026
Dist Suse Esm H88
SUSE Linux kernel update resolves six issues with one important security fix. Install now for enhanced security!
An update that solves six vulnerabilities and has one security fix can now be installed.

Summary

## The SUSE Linux Enterprise 15 SP4 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-2025-68818: scsi: Revert "scsi: qla2xxx: Perform lockless command completion in abort path" (bsc#1256675). * 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). The following non-security bugs were fixed: * watchdog/perf: properly initialize the turbo mode timestamp and rearm

Topics%20covered

Topics Covered

security advisory SuSE security fix important kernel linux

References

* bsc#1246057

* bsc#1256504

* bsc#1256675

* bsc#1257773

* bsc#1259797

* bsc#1260005

* bsc#1260009

Cross-

* CVE-2025-38234

* CVE-2025-68818

* CVE-2026-23103

* CVE-2026-23243

* CVE-2026-23272

* CVE-2026-23274

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-2025-68818 ( 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 ( 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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1557-1
Release Date: 2026-04-22T16:24:13Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE security fix important kernel linux

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