SUSE-SU-2026:22283-1: important: Security update for the Linux Kernel (Live Patch 3 for SUSE Linux Enterprise 16)

Mon Jun 29 16:31:38 UTC 2026

# Security update for the Linux Kernel (Live Patch 3 for SUSE Linux Enterprise
16)

Announcement ID: SUSE-SU-2026:22283-1  
Release Date: 2026-06-25T11:19:45Z  
Rating: important  
References:

  * bsc#1260907
  * bsc#1261640
  * bsc#1263088
  * bsc#1263108
  * bsc#1263902
  * bsc#1266229
  * bsc#1267625
  * bsc#1268282

Cross-References:

  * CVE-2026-23278
  * CVE-2026-31402
  * CVE-2026-31504
  * CVE-2026-31554
  * CVE-2026-31694
  * CVE-2026-43503
  * CVE-2026-46323

CVSS scores:

  * CVE-2026-23278 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-23278 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23278 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31402 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-31402 ( SUSE ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
  * CVE-2026-31402 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31504 ( 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-2026-31504 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31504 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31554 ( 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-2026-31554 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31554 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31694 ( 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-2026-31694 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31694 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-43503 ( 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-2026-43503 ( SUSE ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-43503 ( NVD ):  8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-46323 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46323 ( 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 Micro 6.2

An update that solves seven vulnerabilities and has one fix can now be
installed.

## Description:

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.8.1 fixes various
security issues

The following security issues were fixed:

  * CVE-2026-23278: netfilter: nf_tables: always walk all pending catchall
    elements (bsc#1260907).
  * CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache
    (bsc#1261640).
  * CVE-2026-31504: net: fix fanout UAF in packet_release() via NETDEV_UP race
    (bsc#1263088).
  * CVE-2026-31554: futex: Require sys_futex_requeue() to have identical flags
    (bsc#1263108).
  * CVE-2026-31694: fuse: reject oversized dirents in page cache (bsc#1263902).
  * CVE-2026-43503: final dirty.frag related fixes (bsc#1266229).
  * CVE-2026-46323: net: gro: don't merge zcopy skbs (bsc#1268282).
  * net/sched: fix pedit partial COW leading to page cache (bsc#1267625).

## 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 Micro 6.2  
    zypper in -t patch SUSE-SL-Micro-6.2-1075=1

## Package List:

  * SUSE Linux Micro 6.2 (ppc64le s390x x86_64)
    * kernel-livepatch-6_12_0-160000_8-default-9-160000.1.1
    * kernel-livepatch-6_12_0-160000_8-default-debuginfo-9-160000.1.1
    * kernel-livepatch-SLE16_Update_3-debugsource-9-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-23278.html
  * https://www.suse.com/security/cve/CVE-2026-31402.html
  * https://www.suse.com/security/cve/CVE-2026-31504.html
  * https://www.suse.com/security/cve/CVE-2026-31554.html
  * https://www.suse.com/security/cve/CVE-2026-31694.html
  * https://www.suse.com/security/cve/CVE-2026-43503.html
  * https://www.suse.com/security/cve/CVE-2026-46323.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1260907
  * https://bugzilla.suse.com/show_bug.cgi?id=1261640
  * https://bugzilla.suse.com/show_bug.cgi?id=1263088
  * https://bugzilla.suse.com/show_bug.cgi?id=1263108
  * https://bugzilla.suse.com/show_bug.cgi?id=1263902
  * https://bugzilla.suse.com/show_bug.cgi?id=1266229
  * https://bugzilla.suse.com/show_bug.cgi?id=1267625
  * https://bugzilla.suse.com/show_bug.cgi?id=1268282

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