Security update for the Linux Kernel (Live Patch 35 for SUSE Linux Enterprise 15 SP5)

Announcement ID: SUSE-SU-2026:3319-1
Release Date: 2026-07-28T03:33:52Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-23240 ( 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-2026-23240 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-23240 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-31738 ( 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-2026-31738 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-31738 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2026-43038 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  • CVE-2026-43038 ( NVD ): 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
  • CVE-2026-43038 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-46113 ( SUSE ): 9.3 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  • CVE-2026-46113 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2026-46113 ( NVD ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2026-53359 ( SUSE ): 9.3 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  • CVE-2026-53359 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2026-53359 ( NVD ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Products:
  • openSUSE Leap 15.5
  • SUSE Linux Enterprise High Performance Computing 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 for SAP Applications 15 SP5

An update that solves five vulnerabilities can now be installed.

Description:

This update for the SUSE Linux Enterprise Kernel 5.14.21-150500.55.136 fixes various security issues:

The following security issues were fixed:

  • CVE-2026-23240: tls: Fix race condition in tls_sw_cancel_work_tx() (bsc#1262404).
  • CVE-2026-31738: vxlan: validate ND option lengths in vxlan_na_create (bsc#1264060).
  • CVE-2026-43038: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() (bsc#1271648).
  • CVE-2026-46113: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (bsc#1266970).
  • CVE-2026-53359: KVM: x86: Fix shadow paging use-after-free due to unexpected role (bsc#1270060).

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 Live Patching 15-SP5
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-3319=1 SUSE-SLE-Module-Live-Patching-15-SP5-2026-3320=1
  • openSUSE Leap 15.5
    zypper in -t patch SUSE-2026-3319=1 SUSE-2026-3320=1

Package List:

  • SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
    • kernel-livepatch-5_14_21-150500_55_149-default-debuginfo-6-150500.2.1
    • kernel-livepatch-SLE15-SP5_Update_35-debugsource-10-150500.2.1
    • kernel-livepatch-5_14_21-150500_55_136-default-debuginfo-10-150500.2.1
    • kernel-livepatch-5_14_21-150500_55_149-default-6-150500.2.1
    • kernel-livepatch-SLE15-SP5_Update_38-debugsource-6-150500.2.1
    • kernel-livepatch-5_14_21-150500_55_136-default-10-150500.2.1
  • openSUSE Leap 15.5 (ppc64le s390x x86_64)
    • kernel-livepatch-5_14_21-150500_55_149-default-debuginfo-6-150500.2.1
    • kernel-livepatch-SLE15-SP5_Update_35-debugsource-10-150500.2.1
    • kernel-livepatch-5_14_21-150500_55_136-default-debuginfo-10-150500.2.1
    • kernel-livepatch-5_14_21-150500_55_149-default-6-150500.2.1
    • kernel-livepatch-SLE15-SP5_Update_38-debugsource-6-150500.2.1
    • kernel-livepatch-5_14_21-150500_55_136-default-10-150500.2.1

References: