SUSE-SU-2026:1606-1: important: Security update for the Linux Kernel

SLE-UPDATES null at suse.de
Fri Apr 24 16:30:31 UTC 2026 


# Security update for the Linux Kernel

Announcement ID: SUSE-SU-2026:1606-1  
Release Date: 2026-04-24T11:50:26Z  
Rating: important  
References:

  * bsc#1215492
  * bsc#1246057
  * bsc#1256675
  * bsc#1257773
  * bsc#1259797
  * bsc#1260005
  * bsc#1260009
  * bsc#1260347
  * bsc#1260562

  
Cross-References:

  * CVE-2025-38234
  * CVE-2025-68818
  * CVE-2026-23103
  * CVE-2026-23243
  * CVE-2026-23272
  * CVE-2026-23274
  * CVE-2026-23317

  
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
  * 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
  * CVE-2026-23103 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23243 ( 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-2026-23243 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23243 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23272 ( 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-2026-23272 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23272 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23274 ( 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-2026-23274 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23274 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23317 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-23317 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23317 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  * SUSE Linux Enterprise Live Patching 15-SP5
  * SUSE Linux Enterprise Micro 5.5
  * SUSE Linux Enterprise Real Time 15 SP5
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server 15 SP5 LTSS
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5

  
  
An update that solves seven vulnerabilities and has two security fixes can now
be installed.

## Description:

The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security
issues

The following security issues 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-2026-23317: drm/vmwgfx: Return the correct value in vmw_translate_ptr
    functions (bsc#1260562).

The following non security issues were fixed:

  * nvme-fc: use ctrl state getter (git-fixes bsc#1215492).
  * nvme-pci: fix queue unquiesce check on slot_reset (git-fixes).
  * nvme-pci: skip nvme_write_sq_db on empty rqlist (git-fixes).
  * PCI: dwc: ep: Return -ENOMEM for allocation failures (git-fixes).
  * PCI: Fix lock symmetry in pci_slot_unlock() (git-fixes).
  * PCI: Fix pci_slot_trylock() error handling (git-fixes).
  * PCI: tegra194: Fix duplicate PLL disable in pex_ep_event_pex_rst_assert()
    (git-fixes).
  * PCI/ACS: Fix 'pci=config_acs=' parameter (git-fixes).
  * x86/platform/uv: Handle deconfigured sockets (bsc#1260347).

## Special Instructions and Notes:

  * Please reboot the system after installing this update.

## 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 Micro 5.5  
    zypper in -t patch SUSE-SLE-Micro-5.5-2026-1606=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-1606=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-1606=1

  * SUSE Linux Enterprise Server 15 SP5 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1606=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP5  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1606=1

  * SUSE Linux Enterprise Live Patching 15-SP5  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-1606=1

## Package List:

  * SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64 nosrc)
    * kernel-default-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Micro 5.5 (aarch64 x86_64)
    * kernel-default-base-5.14.21-150500.55.144.1.150500.6.71.1
  * SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)
    * kernel-default-debugsource-5.14.21-150500.55.144.1
    * kernel-default-debuginfo-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Micro 5.5 (noarch)
    * kernel-macros-5.14.21-150500.55.144.1
    * kernel-source-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64
    x86_64)
    * dlm-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * cluster-md-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * dlm-kmp-default-5.14.21-150500.55.144.1
    * kernel-default-devel-debuginfo-5.14.21-150500.55.144.1
    * kernel-obs-build-debugsource-5.14.21-150500.55.144.1
    * ocfs2-kmp-default-5.14.21-150500.55.144.1
    * gfs2-kmp-default-5.14.21-150500.55.144.1
    * kernel-default-debugsource-5.14.21-150500.55.144.1
    * ocfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-syms-5.14.21-150500.55.144.1
    * kernel-default-base-5.14.21-150500.55.144.1.150500.6.71.1
    * cluster-md-kmp-default-5.14.21-150500.55.144.1
    * kernel-obs-build-5.14.21-150500.55.144.1
    * gfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-default-devel-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64
    nosrc)
    * kernel-64kb-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64)
    * kernel-64kb-debugsource-5.14.21-150500.55.144.1
    * kernel-64kb-devel-5.14.21-150500.55.144.1
    * kernel-64kb-debuginfo-5.14.21-150500.55.144.1
    * kernel-64kb-devel-debuginfo-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 nosrc
    x86_64)
    * kernel-default-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch)
    * kernel-macros-5.14.21-150500.55.144.1
    * kernel-devel-5.14.21-150500.55.144.1
    * kernel-source-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch nosrc)
    * kernel-docs-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64
    x86_64)
    * dlm-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * cluster-md-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * dlm-kmp-default-5.14.21-150500.55.144.1
    * kernel-default-devel-debuginfo-5.14.21-150500.55.144.1
    * kernel-obs-build-debugsource-5.14.21-150500.55.144.1
    * ocfs2-kmp-default-5.14.21-150500.55.144.1
    * gfs2-kmp-default-5.14.21-150500.55.144.1
    * kernel-default-debugsource-5.14.21-150500.55.144.1
    * ocfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-syms-5.14.21-150500.55.144.1
    * kernel-default-base-5.14.21-150500.55.144.1.150500.6.71.1
    * cluster-md-kmp-default-5.14.21-150500.55.144.1
    * kernel-obs-build-5.14.21-150500.55.144.1
    * gfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-default-devel-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 nosrc)
    * kernel-64kb-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64)
    * kernel-64kb-debugsource-5.14.21-150500.55.144.1
    * kernel-64kb-devel-5.14.21-150500.55.144.1
    * kernel-64kb-debuginfo-5.14.21-150500.55.144.1
    * kernel-64kb-devel-debuginfo-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 nosrc
    x86_64)
    * kernel-default-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch)
    * kernel-macros-5.14.21-150500.55.144.1
    * kernel-devel-5.14.21-150500.55.144.1
    * kernel-source-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch nosrc)
    * kernel-docs-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * dlm-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * cluster-md-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * dlm-kmp-default-5.14.21-150500.55.144.1
    * kernel-default-devel-debuginfo-5.14.21-150500.55.144.1
    * kernel-obs-build-debugsource-5.14.21-150500.55.144.1
    * ocfs2-kmp-default-5.14.21-150500.55.144.1
    * gfs2-kmp-default-5.14.21-150500.55.144.1
    * kernel-default-debugsource-5.14.21-150500.55.144.1
    * ocfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-syms-5.14.21-150500.55.144.1
    * cluster-md-kmp-default-5.14.21-150500.55.144.1
    * reiserfs-kmp-default-5.14.21-150500.55.144.1
    * kernel-obs-build-5.14.21-150500.55.144.1
    * gfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * reiserfs-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-default-devel-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 nosrc)
    * kernel-64kb-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64)
    * kernel-64kb-debugsource-5.14.21-150500.55.144.1
    * kernel-64kb-devel-5.14.21-150500.55.144.1
    * kernel-64kb-debuginfo-5.14.21-150500.55.144.1
    * kernel-64kb-devel-debuginfo-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64
    nosrc)
    * kernel-default-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le x86_64)
    * kernel-default-base-5.14.21-150500.55.144.1.150500.6.71.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (noarch)
    * kernel-macros-5.14.21-150500.55.144.1
    * kernel-devel-5.14.21-150500.55.144.1
    * kernel-source-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (noarch nosrc)
    * kernel-docs-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (nosrc s390x)
    * kernel-zfcpdump-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (s390x)
    * kernel-zfcpdump-debuginfo-5.14.21-150500.55.144.1
    * kernel-zfcpdump-debugsource-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
    * dlm-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * cluster-md-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * dlm-kmp-default-5.14.21-150500.55.144.1
    * kernel-default-devel-debuginfo-5.14.21-150500.55.144.1
    * kernel-obs-build-debugsource-5.14.21-150500.55.144.1
    * ocfs2-kmp-default-5.14.21-150500.55.144.1
    * gfs2-kmp-default-5.14.21-150500.55.144.1
    * kernel-default-debugsource-5.14.21-150500.55.144.1
    * ocfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-syms-5.14.21-150500.55.144.1
    * kernel-default-base-5.14.21-150500.55.144.1.150500.6.71.1
    * cluster-md-kmp-default-5.14.21-150500.55.144.1
    * reiserfs-kmp-default-5.14.21-150500.55.144.1
    * kernel-obs-build-5.14.21-150500.55.144.1
    * gfs2-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * reiserfs-kmp-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-default-debuginfo-5.14.21-150500.55.144.1
    * kernel-default-devel-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (nosrc ppc64le
    x86_64)
    * kernel-default-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch)
    * kernel-macros-5.14.21-150500.55.144.1
    * kernel-devel-5.14.21-150500.55.144.1
    * kernel-source-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch nosrc)
    * kernel-docs-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Live Patching 15-SP5 (nosrc)
    * kernel-default-5.14.21-150500.55.144.1
  * SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
    * kernel-default-debugsource-5.14.21-150500.55.144.1
    * kernel-default-livepatch-devel-5.14.21-150500.55.144.1
    * kernel-livepatch-SLE15-SP5_Update_37-debugsource-1-150500.11.3.1
    * kernel-default-livepatch-5.14.21-150500.55.144.1
    * kernel-livepatch-5_14_21-150500_55_144-default-1-150500.11.3.1
    * kernel-livepatch-5_14_21-150500_55_144-default-debuginfo-1-150500.11.3.1
    * kernel-default-debuginfo-5.14.21-150500.55.144.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-38234.html
  * https://www.suse.com/security/cve/CVE-2025-68818.html
  * https://www.suse.com/security/cve/CVE-2026-23103.html
  * https://www.suse.com/security/cve/CVE-2026-23243.html
  * https://www.suse.com/security/cve/CVE-2026-23272.html
  * https://www.suse.com/security/cve/CVE-2026-23274.html
  * https://www.suse.com/security/cve/CVE-2026-23317.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1215492
  * https://bugzilla.suse.com/show_bug.cgi?id=1246057
  * https://bugzilla.suse.com/show_bug.cgi?id=1256675
  * https://bugzilla.suse.com/show_bug.cgi?id=1257773
  * https://bugzilla.suse.com/show_bug.cgi?id=1259797
  * https://bugzilla.suse.com/show_bug.cgi?id=1260005
  * https://bugzilla.suse.com/show_bug.cgi?id=1260009
  * https://bugzilla.suse.com/show_bug.cgi?id=1260347
  * https://bugzilla.suse.com/show_bug.cgi?id=1260562

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