SUSE-SU-2026:1342-1: important: Security update for the Linux Kernel
SLE-UPDATES
null at suse.de
Wed Apr 15 16:30:33 UTC 2026
# Security update for the Linux Kernel
Announcement ID: SUSE-SU-2026:1342-1
Release Date: 2026-04-15T10:15:56Z
Rating: important
References:
* bsc#1246057
* bsc#1257773
* bsc#1259797
* bsc#1260005
* bsc#1260009
* bsc#1260486
* bsc#1260730
Cross-References:
* 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
* 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-2026-23293 ( SUSE ): 5.9
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-23293 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-23398 ( SUSE ): 5.9
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-23398 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:
* openSUSE Leap 15.3
* SUSE Linux Enterprise Micro 5.2
* SUSE Linux Enterprise Micro for Rancher 5.2
An update that solves seven vulnerabilities can now be installed.
## Description:
The SUSE Linux Enterprise 15 SP3 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-2026-23293: 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).
## 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:
* openSUSE Leap 15.3
zypper in -t patch SUSE-2026-1342=1
* SUSE Linux Enterprise Micro 5.2
zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-1342=1
* SUSE Linux Enterprise Micro for Rancher 5.2
zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-1342=1
## Package List:
* openSUSE Leap 15.3 (noarch nosrc)
* kernel-docs-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (noarch)
* kernel-devel-5.3.18-150300.59.241.1
* kernel-source-5.3.18-150300.59.241.1
* kernel-source-vanilla-5.3.18-150300.59.241.1
* kernel-docs-html-5.3.18-150300.59.241.1
* kernel-macros-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64)
* kernel-default-debugsource-5.3.18-150300.59.241.1
* kernel-obs-build-debugsource-5.3.18-150300.59.241.1
* gfs2-kmp-default-debuginfo-5.3.18-150300.59.241.1
* kernel-default-optional-5.3.18-150300.59.241.1
* cluster-md-kmp-default-5.3.18-150300.59.241.1
* reiserfs-kmp-default-debuginfo-5.3.18-150300.59.241.1
* kselftests-kmp-default-5.3.18-150300.59.241.1
* reiserfs-kmp-default-5.3.18-150300.59.241.1
* cluster-md-kmp-default-debuginfo-5.3.18-150300.59.241.1
* kernel-default-devel-5.3.18-150300.59.241.1
* ocfs2-kmp-default-5.3.18-150300.59.241.1
* kernel-default-extra-5.3.18-150300.59.241.1
* kernel-default-debuginfo-5.3.18-150300.59.241.1
* kernel-default-livepatch-5.3.18-150300.59.241.1
* dlm-kmp-default-5.3.18-150300.59.241.1
* kernel-default-base-rebuild-5.3.18-150300.59.241.1.150300.18.144.1
* kernel-obs-build-5.3.18-150300.59.241.1
* ocfs2-kmp-default-debuginfo-5.3.18-150300.59.241.1
* kernel-default-devel-debuginfo-5.3.18-150300.59.241.1
* kernel-syms-5.3.18-150300.59.241.1
* gfs2-kmp-default-5.3.18-150300.59.241.1
* kernel-default-extra-debuginfo-5.3.18-150300.59.241.1
* dlm-kmp-default-debuginfo-5.3.18-150300.59.241.1
* kernel-default-base-5.3.18-150300.59.241.1.150300.18.144.1
* kernel-default-optional-debuginfo-5.3.18-150300.59.241.1
* kernel-obs-qa-5.3.18-150300.59.241.1
* kselftests-kmp-default-debuginfo-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64 nosrc)
* kernel-default-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (ppc64le s390x x86_64)
* kernel-default-livepatch-devel-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (nosrc ppc64le x86_64)
* kernel-kvmsmall-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (ppc64le x86_64)
* kernel-kvmsmall-devel-debuginfo-5.3.18-150300.59.241.1
* kernel-kvmsmall-debugsource-5.3.18-150300.59.241.1
* kernel-kvmsmall-debuginfo-5.3.18-150300.59.241.1
* kernel-kvmsmall-devel-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (aarch64 x86_64)
* dlm-kmp-preempt-debuginfo-5.3.18-150300.59.241.1
* kselftests-kmp-preempt-5.3.18-150300.59.241.1
* ocfs2-kmp-preempt-debuginfo-5.3.18-150300.59.241.1
* gfs2-kmp-preempt-debuginfo-5.3.18-150300.59.241.1
* kernel-preempt-extra-debuginfo-5.3.18-150300.59.241.1
* reiserfs-kmp-preempt-5.3.18-150300.59.241.1
* kernel-preempt-optional-debuginfo-5.3.18-150300.59.241.1
* cluster-md-kmp-preempt-debuginfo-5.3.18-150300.59.241.1
* kernel-preempt-devel-debuginfo-5.3.18-150300.59.241.1
* reiserfs-kmp-preempt-debuginfo-5.3.18-150300.59.241.1
* dlm-kmp-preempt-5.3.18-150300.59.241.1
* kernel-preempt-optional-5.3.18-150300.59.241.1
* kernel-preempt-debuginfo-5.3.18-150300.59.241.1
* kselftests-kmp-preempt-debuginfo-5.3.18-150300.59.241.1
* gfs2-kmp-preempt-5.3.18-150300.59.241.1
* ocfs2-kmp-preempt-5.3.18-150300.59.241.1
* kernel-preempt-devel-5.3.18-150300.59.241.1
* kernel-preempt-extra-5.3.18-150300.59.241.1
* kernel-preempt-debugsource-5.3.18-150300.59.241.1
* cluster-md-kmp-preempt-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (aarch64 nosrc x86_64)
* kernel-preempt-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (nosrc s390x)
* kernel-zfcpdump-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (s390x)
* kernel-zfcpdump-debugsource-5.3.18-150300.59.241.1
* kernel-zfcpdump-debuginfo-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (nosrc)
* dtb-aarch64-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (aarch64)
* dtb-altera-5.3.18-150300.59.241.1
* kernel-64kb-devel-debuginfo-5.3.18-150300.59.241.1
* reiserfs-kmp-64kb-5.3.18-150300.59.241.1
* dtb-arm-5.3.18-150300.59.241.1
* dtb-renesas-5.3.18-150300.59.241.1
* dtb-sprd-5.3.18-150300.59.241.1
* dtb-rockchip-5.3.18-150300.59.241.1
* dtb-exynos-5.3.18-150300.59.241.1
* dtb-zte-5.3.18-150300.59.241.1
* reiserfs-kmp-64kb-debuginfo-5.3.18-150300.59.241.1
* kernel-64kb-extra-5.3.18-150300.59.241.1
* dtb-hisilicon-5.3.18-150300.59.241.1
* dtb-nvidia-5.3.18-150300.59.241.1
* kernel-64kb-debugsource-5.3.18-150300.59.241.1
* dtb-amlogic-5.3.18-150300.59.241.1
* dtb-mediatek-5.3.18-150300.59.241.1
* dtb-amd-5.3.18-150300.59.241.1
* kernel-64kb-optional-debuginfo-5.3.18-150300.59.241.1
* dtb-qcom-5.3.18-150300.59.241.1
* dtb-socionext-5.3.18-150300.59.241.1
* dlm-kmp-64kb-debuginfo-5.3.18-150300.59.241.1
* cluster-md-kmp-64kb-debuginfo-5.3.18-150300.59.241.1
* dlm-kmp-64kb-5.3.18-150300.59.241.1
* kernel-64kb-extra-debuginfo-5.3.18-150300.59.241.1
* dtb-freescale-5.3.18-150300.59.241.1
* kernel-64kb-devel-5.3.18-150300.59.241.1
* gfs2-kmp-64kb-debuginfo-5.3.18-150300.59.241.1
* ocfs2-kmp-64kb-debuginfo-5.3.18-150300.59.241.1
* kernel-64kb-debuginfo-5.3.18-150300.59.241.1
* dtb-cavium-5.3.18-150300.59.241.1
* dtb-lg-5.3.18-150300.59.241.1
* cluster-md-kmp-64kb-5.3.18-150300.59.241.1
* kselftests-kmp-64kb-debuginfo-5.3.18-150300.59.241.1
* dtb-al-5.3.18-150300.59.241.1
* dtb-marvell-5.3.18-150300.59.241.1
* ocfs2-kmp-64kb-5.3.18-150300.59.241.1
* gfs2-kmp-64kb-5.3.18-150300.59.241.1
* dtb-broadcom-5.3.18-150300.59.241.1
* kselftests-kmp-64kb-5.3.18-150300.59.241.1
* dtb-allwinner-5.3.18-150300.59.241.1
* dtb-xilinx-5.3.18-150300.59.241.1
* kernel-64kb-optional-5.3.18-150300.59.241.1
* dtb-apm-5.3.18-150300.59.241.1
* openSUSE Leap 15.3 (aarch64 nosrc)
* kernel-64kb-5.3.18-150300.59.241.1
* SUSE Linux Enterprise Micro 5.2 (aarch64 nosrc s390x x86_64)
* kernel-default-5.3.18-150300.59.241.1
* SUSE Linux Enterprise Micro 5.2 (aarch64 x86_64)
* kernel-default-base-5.3.18-150300.59.241.1.150300.18.144.1
* SUSE Linux Enterprise Micro 5.2 (aarch64 s390x x86_64)
* kernel-default-debugsource-5.3.18-150300.59.241.1
* kernel-default-debuginfo-5.3.18-150300.59.241.1
* SUSE Linux Enterprise Micro 5.2 (noarch)
* kernel-macros-5.3.18-150300.59.241.1
* kernel-source-5.3.18-150300.59.241.1
* SUSE Linux Enterprise Micro for Rancher 5.2 (aarch64 nosrc s390x x86_64)
* kernel-default-5.3.18-150300.59.241.1
* SUSE Linux Enterprise Micro for Rancher 5.2 (aarch64 x86_64)
* kernel-default-base-5.3.18-150300.59.241.1.150300.18.144.1
* SUSE Linux Enterprise Micro for Rancher 5.2 (aarch64 s390x x86_64)
* kernel-default-debugsource-5.3.18-150300.59.241.1
* kernel-default-debuginfo-5.3.18-150300.59.241.1
* SUSE Linux Enterprise Micro for Rancher 5.2 (noarch)
* kernel-macros-5.3.18-150300.59.241.1
* kernel-source-5.3.18-150300.59.241.1
## References:
* https://www.suse.com/security/cve/CVE-2025-38234.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-2026-23293.html
* https://www.suse.com/security/cve/CVE-2026-23398.html
* https://bugzilla.suse.com/show_bug.cgi?id=1246057
* 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=1260486
* https://bugzilla.suse.com/show_bug.cgi?id=1260730
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