SUSE-SU-2026:1840-1: important: Security update for the Linux Kernel

SLE-SECURITY-UPDATES null at suse.de
Wed May 13 16:30:22 UTC 2026 

# Security update for the Linux Kernel

Announcement ID: SUSE-SU-2026:1840-1  
Release Date: 2026-05-13T10:05:24Z  
Rating: important  
References:

  * bsc#1264449
  * bsc#1264450

  
Cross-References:

  * CVE-2026-43284
  * CVE-2026-43500

  
CVSS scores:

  * CVE-2026-43284 ( SUSE ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-43284 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-43284 ( NVD ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-43500 ( SUSE ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-43500 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-43500 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * openSUSE Leap 15.6
  * SUSE Linux Enterprise High Availability Extension 15 SP6
  * SUSE Linux Enterprise Live Patching 15-SP6
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP6 LTSS
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

The SUSE Linux Enterprise 15 SP6 kernel was updated to fix the following issue:

  * CVE-2026-43284: xfrm: esp: avoid in-place decrypt on shared skb frags
    (bsc#1264449).
  * CVE-2026-43500: rxrpc: Also unshare DATA/RESPONSE packets when paged frags
    are present (bsc#1264450).

## 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 15.6  
    zypper in -t patch SUSE-2026-1840=1

  * SUSE Linux Enterprise High Availability Extension 15 SP6  
    zypper in -t patch SUSE-SLE-Product-HA-15-SP6-2026-1840=1

  * SUSE Linux Enterprise Server 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-1840=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-1840=1

  * SUSE Linux Enterprise Live Patching 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-1840=1

## Package List:

  * openSUSE Leap 15.6 (noarch nosrc)
    * kernel-docs-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (noarch)
    * kernel-macros-6.4.0-150600.23.103.1
    * kernel-source-vanilla-6.4.0-150600.23.103.1
    * kernel-source-6.4.0-150600.23.103.1
    * kernel-docs-html-6.4.0-150600.23.103.1
    * kernel-devel-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (nosrc ppc64le x86_64)
    * kernel-debug-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (ppc64le x86_64)
    * kernel-debug-debugsource-6.4.0-150600.23.103.1
    * kernel-debug-devel-6.4.0-150600.23.103.1
    * kernel-debug-devel-debuginfo-6.4.0-150600.23.103.1
    * kernel-debug-debuginfo-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (x86_64)
    * kernel-kvmsmall-vdso-debuginfo-6.4.0-150600.23.103.1
    * kernel-debug-vdso-debuginfo-6.4.0-150600.23.103.1
    * kernel-default-vdso-6.4.0-150600.23.103.1
    * kernel-debug-vdso-6.4.0-150600.23.103.1
    * kernel-default-vdso-debuginfo-6.4.0-150600.23.103.1
    * kernel-kvmsmall-vdso-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (aarch64)
    * dtb-hisilicon-6.4.0-150600.23.103.1
    * dtb-arm-6.4.0-150600.23.103.1
    * dtb-mediatek-6.4.0-150600.23.103.1
    * reiserfs-kmp-64kb-6.4.0-150600.23.103.1
    * gfs2-kmp-64kb-debuginfo-6.4.0-150600.23.103.1
    * dtb-amazon-6.4.0-150600.23.103.1
    * kernel-64kb-devel-6.4.0-150600.23.103.1
    * dtb-altera-6.4.0-150600.23.103.1
    * dlm-kmp-64kb-debuginfo-6.4.0-150600.23.103.1
    * dtb-broadcom-6.4.0-150600.23.103.1
    * dtb-nvidia-6.4.0-150600.23.103.1
    * dtb-renesas-6.4.0-150600.23.103.1
    * dtb-apm-6.4.0-150600.23.103.1
    * dtb-rockchip-6.4.0-150600.23.103.1
    * kernel-64kb-extra-6.4.0-150600.23.103.1
    * ocfs2-kmp-64kb-debuginfo-6.4.0-150600.23.103.1
    * dlm-kmp-64kb-6.4.0-150600.23.103.1
    * cluster-md-kmp-64kb-debuginfo-6.4.0-150600.23.103.1
    * kernel-64kb-debuginfo-6.4.0-150600.23.103.1
    * gfs2-kmp-64kb-6.4.0-150600.23.103.1
    * dtb-amd-6.4.0-150600.23.103.1
    * dtb-cavium-6.4.0-150600.23.103.1
    * dtb-allwinner-6.4.0-150600.23.103.1
    * reiserfs-kmp-64kb-debuginfo-6.4.0-150600.23.103.1
    * dtb-socionext-6.4.0-150600.23.103.1
    * dtb-apple-6.4.0-150600.23.103.1
    * dtb-marvell-6.4.0-150600.23.103.1
    * kernel-64kb-optional-debuginfo-6.4.0-150600.23.103.1
    * kernel-64kb-extra-debuginfo-6.4.0-150600.23.103.1
    * dtb-exynos-6.4.0-150600.23.103.1
    * dtb-qcom-6.4.0-150600.23.103.1
    * dtb-xilinx-6.4.0-150600.23.103.1
    * kernel-64kb-optional-6.4.0-150600.23.103.1
    * kernel-64kb-debugsource-6.4.0-150600.23.103.1
    * dtb-freescale-6.4.0-150600.23.103.1
    * kselftests-kmp-64kb-6.4.0-150600.23.103.1
    * kselftests-kmp-64kb-debuginfo-6.4.0-150600.23.103.1
    * dtb-amlogic-6.4.0-150600.23.103.1
    * dtb-lg-6.4.0-150600.23.103.1
    * ocfs2-kmp-64kb-6.4.0-150600.23.103.1
    * dtb-sprd-6.4.0-150600.23.103.1
    * cluster-md-kmp-64kb-6.4.0-150600.23.103.1
    * kernel-64kb-devel-debuginfo-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (aarch64 nosrc)
    * kernel-64kb-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (aarch64 ppc64le x86_64)
    * kernel-kvmsmall-devel-6.4.0-150600.23.103.1
    * kernel-default-base-rebuild-6.4.0-150600.23.103.1.150600.12.48.1
    * kernel-default-base-6.4.0-150600.23.103.1.150600.12.48.1
    * kernel-kvmsmall-debugsource-6.4.0-150600.23.103.1
    * kernel-kvmsmall-debuginfo-6.4.0-150600.23.103.1
    * kernel-kvmsmall-devel-debuginfo-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    * cluster-md-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * gfs2-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * reiserfs-kmp-default-6.4.0-150600.23.103.1
    * kernel-default-extra-6.4.0-150600.23.103.1
    * kselftests-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * reiserfs-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * kernel-default-extra-debuginfo-6.4.0-150600.23.103.1
    * ocfs2-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * kernel-default-optional-debuginfo-6.4.0-150600.23.103.1
    * ocfs2-kmp-default-6.4.0-150600.23.103.1
    * kernel-syms-6.4.0-150600.23.103.1
    * kernel-obs-build-debugsource-6.4.0-150600.23.103.1
    * kernel-default-optional-6.4.0-150600.23.103.1
    * kernel-default-livepatch-6.4.0-150600.23.103.1
    * kselftests-kmp-default-6.4.0-150600.23.103.1
    * kernel-obs-qa-6.4.0-150600.23.103.1
    * kernel-default-debugsource-6.4.0-150600.23.103.1
    * kernel-obs-build-6.4.0-150600.23.103.1
    * gfs2-kmp-default-6.4.0-150600.23.103.1
    * kernel-default-devel-6.4.0-150600.23.103.1
    * dlm-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * kernel-default-devel-debuginfo-6.4.0-150600.23.103.1
    * cluster-md-kmp-default-6.4.0-150600.23.103.1
    * dlm-kmp-default-6.4.0-150600.23.103.1
    * kernel-default-debuginfo-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 nosrc)
    * kernel-default-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (aarch64 nosrc ppc64le x86_64)
    * kernel-kvmsmall-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (ppc64le s390x x86_64)
    * kernel-default-livepatch-devel-6.4.0-150600.23.103.1
    * kernel-livepatch-6_4_0-150600_23_103-default-1-150600.13.3.1
    * kernel-livepatch-6_4_0-150600_23_103-default-debuginfo-1-150600.13.3.1
    * kernel-livepatch-SLE15-SP6_Update_24-debugsource-1-150600.13.3.1
  * openSUSE Leap 15.6 (nosrc s390x)
    * kernel-zfcpdump-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (s390x)
    * kernel-zfcpdump-debugsource-6.4.0-150600.23.103.1
    * kernel-zfcpdump-debuginfo-6.4.0-150600.23.103.1
  * openSUSE Leap 15.6 (nosrc)
    * dtb-aarch64-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise High Availability Extension 15 SP6 (nosrc)
    * kernel-default-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise High Availability Extension 15 SP6 (aarch64 ppc64le
    s390x x86_64)
    * kernel-default-debuginfo-6.4.0-150600.23.103.1
    * kernel-default-debugsource-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (noarch nosrc)
    * kernel-docs-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)
    * kernel-macros-6.4.0-150600.23.103.1
    * kernel-source-6.4.0-150600.23.103.1
    * kernel-devel-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
    * cluster-md-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * gfs2-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * kernel-default-devel-6.4.0-150600.23.103.1
    * kernel-default-devel-debuginfo-6.4.0-150600.23.103.1
    * reiserfs-kmp-default-6.4.0-150600.23.103.1
    * kernel-syms-6.4.0-150600.23.103.1
    * kernel-default-debugsource-6.4.0-150600.23.103.1
    * kernel-obs-build-6.4.0-150600.23.103.1
    * kernel-obs-build-debugsource-6.4.0-150600.23.103.1
    * dlm-kmp-default-6.4.0-150600.23.103.1
    * gfs2-kmp-default-6.4.0-150600.23.103.1
    * cluster-md-kmp-default-6.4.0-150600.23.103.1
    * reiserfs-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * kernel-default-debuginfo-6.4.0-150600.23.103.1
    * dlm-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * ocfs2-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * ocfs2-kmp-default-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64
    nosrc)
    * kernel-default-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le x86_64)
    * kernel-default-base-6.4.0-150600.23.103.1.150600.12.48.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 nosrc)
    * kernel-64kb-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64)
    * kernel-64kb-debugsource-6.4.0-150600.23.103.1
    * kernel-64kb-devel-6.4.0-150600.23.103.1
    * kernel-64kb-devel-debuginfo-6.4.0-150600.23.103.1
    * kernel-64kb-debuginfo-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (nosrc s390x)
    * kernel-zfcpdump-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (s390x)
    * kernel-zfcpdump-debugsource-6.4.0-150600.23.103.1
    * kernel-zfcpdump-debuginfo-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
    * cluster-md-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * reiserfs-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * gfs2-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * kernel-default-devel-6.4.0-150600.23.103.1
    * kernel-default-devel-debuginfo-6.4.0-150600.23.103.1
    * reiserfs-kmp-default-6.4.0-150600.23.103.1
    * kernel-syms-6.4.0-150600.23.103.1
    * kernel-default-debugsource-6.4.0-150600.23.103.1
    * kernel-obs-build-6.4.0-150600.23.103.1
    * kernel-obs-build-debugsource-6.4.0-150600.23.103.1
    * kernel-default-base-6.4.0-150600.23.103.1.150600.12.48.1
    * gfs2-kmp-default-6.4.0-150600.23.103.1
    * cluster-md-kmp-default-6.4.0-150600.23.103.1
    * dlm-kmp-default-6.4.0-150600.23.103.1
    * kernel-default-debuginfo-6.4.0-150600.23.103.1
    * dlm-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * ocfs2-kmp-default-debuginfo-6.4.0-150600.23.103.1
    * ocfs2-kmp-default-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (nosrc ppc64le
    x86_64)
    * kernel-default-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch)
    * kernel-macros-6.4.0-150600.23.103.1
    * kernel-source-6.4.0-150600.23.103.1
    * kernel-devel-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch nosrc)
    * kernel-docs-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Live Patching 15-SP6 (nosrc)
    * kernel-default-6.4.0-150600.23.103.1
  * SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64)
    * kernel-default-livepatch-6.4.0-150600.23.103.1
    * kernel-livepatch-SLE15-SP6_Update_24-debugsource-1-150600.13.3.1
    * kernel-default-debugsource-6.4.0-150600.23.103.1
    * kernel-default-livepatch-devel-6.4.0-150600.23.103.1
    * kernel-livepatch-6_4_0-150600_23_103-default-1-150600.13.3.1
    * kernel-default-debuginfo-6.4.0-150600.23.103.1
    * kernel-livepatch-6_4_0-150600_23_103-default-debuginfo-1-150600.13.3.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-43284.html
  * https://www.suse.com/security/cve/CVE-2026-43500.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1264449
  * https://bugzilla.suse.com/show_bug.cgi?id=1264450

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