SUSE-SU-2026:1221-1: important: Security update for the Linux Kernel (Live Patch 67 for SUSE Linux Enterprise 12 SP5)

Thu Apr 9 08:30:17 UTC 2026

# Security update for the Linux Kernel (Live Patch 67 for SUSE Linux Enterprise
12 SP5)

Announcement ID: SUSE-SU-2026:1221-1  
Release Date: 2026-04-08T16:04:43Z  
Rating: important  
References:

  * bsc#1252036
  * bsc#1252689
  * bsc#1255235
  * bsc#1256780
  * bsc#1257238
  * bsc#1258051
  * bsc#1258784

Cross-References:

  * CVE-2023-53794
  * CVE-2025-39973
  * CVE-2025-40018
  * CVE-2025-71120
  * CVE-2026-22999
  * CVE-2026-23074
  * CVE-2026-23209

CVSS scores:

  * CVE-2023-53794 ( SUSE ):  7.7
    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2023-53794 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-39973 ( 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-2025-39973 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-40018 ( 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-2025-40018 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-71120 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-71120 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-71120 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-22999 ( 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-2026-22999 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-22999 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-23074 ( 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-2026-23074 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23074 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23074 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23209 ( SUSE ):  8.5
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-23209 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23209 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23209 ( 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 12 SP5
  * SUSE Linux Enterprise Live Patching 12-SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

An update that solves seven vulnerabilities can now be installed.

## Description:

This update for the SUSE Linux Enterprise Kernel 4.12.14-122.255 fixes various
security issues

The following security issues were fixed:

  * CVE-2023-53794: cifs: fix session state check in reconnect to avoid use-
    after-free issue (bsc#1255235).
  * CVE-2025-39973: i40e: add validation for ring_len param (bsc#1252036).
  * CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup
    (bsc#1252689).
  * CVE-2025-71120: SUNRPC: svcauth_gss: avoid NULL deref on zero length
    gss_token in gss_read_proxy_verf (bsc#1256780).
  * CVE-2026-22999: net/sched: sch_qfq: do not free existing class in
    qfq_change_class() (bsc#1257238).
  * CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc
    (bsc#1258051).
  * CVE-2026-23209: macvlan: fix error recovery in macvlan_common_newlink()
    (bsc#1258784).

## 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 12-SP5  
    zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2026-1221=1

## Package List:

  * SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64)
    * kgraft-patch-4_12_14-122_255-default-15-2.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-53794.html
  * https://www.suse.com/security/cve/CVE-2025-39973.html
  * https://www.suse.com/security/cve/CVE-2025-40018.html
  * https://www.suse.com/security/cve/CVE-2025-71120.html
  * https://www.suse.com/security/cve/CVE-2026-22999.html
  * https://www.suse.com/security/cve/CVE-2026-23074.html
  * https://www.suse.com/security/cve/CVE-2026-23209.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1252036
  * https://bugzilla.suse.com/show_bug.cgi?id=1252689
  * https://bugzilla.suse.com/show_bug.cgi?id=1255235
  * https://bugzilla.suse.com/show_bug.cgi?id=1256780
  * https://bugzilla.suse.com/show_bug.cgi?id=1257238
  * https://bugzilla.suse.com/show_bug.cgi?id=1258051
  * https://bugzilla.suse.com/show_bug.cgi?id=1258784

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