SUSE-SU-2026:2317-1: important: Security update for the Linux Kernel

Wed Jun 10 08:31:15 UTC 2026

# Security update for the Linux Kernel

Announcement ID: SUSE-SU-2026:2317-1  
Release Date: 2026-06-09T13:20:54Z  
Rating: important  
References:

  * bsc#1260018
  * bsc#1261638
  * bsc#1263600
  * bsc#1263668
  * bsc#1263995
  * bsc#1264634
  * bsc#1264848
  * bsc#1265126
  * bsc#1266001

Cross-References:

  * CVE-2026-23271
  * CVE-2026-31402
  * CVE-2026-31607
  * CVE-2026-31685
  * CVE-2026-43037
  * CVE-2026-43126
  * CVE-2026-43190
  * CVE-2026-43437
  * CVE-2026-43499
  * CVE-2026-46243

CVSS scores:

  * CVE-2026-23271 ( SUSE ):  5.8
    CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-23271 ( SUSE ):  5.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
  * CVE-2026-23271 ( 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-2026-31607 ( SUSE ):  7.0
    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-31607 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
  * CVE-2026-31607 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-31685 ( SUSE ):  8.3
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-31685 ( SUSE ):  7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-31685 ( NVD ):  9.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
  * CVE-2026-43037 ( SUSE ):  7.7
    CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-43037 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-43037 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-43126 ( 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-2026-43126 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-43126 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-43190 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-43190 ( SUSE ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-43190 ( NVD ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-43437 ( 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-2026-43437 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-43437 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-43499 ( 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-2026-43499 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-43499 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46243 ( 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-2026-46243 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46243 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-46243 ( NVD ):  7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected Products:

  * SUSE Linux Enterprise Server 11 SP4
  * SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE

An update that solves 10 vulnerabilities can now be installed.

## Description:

The SUSE Linux Enterprise 11 SP4 kernel was updated to fix various security
issues

The following security issues were fixed:

  * CVE-2026-23271: perf: Fix __perf_event_overflow() vs
    perf_remove_from_context() race (bsc#1260018).
  * CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache
    (bsc#1261638).
  * CVE-2026-31607: usbip: validate number_of_packets in usbip_pack_ret_submit()
    (bsc#1263600).
  * CVE-2026-31685: netfilter: ip6t_eui64: reject invalid MAC header for all
    packets (bsc#1263668).
  * CVE-2026-43037: ip6_tunnel: clear skb2->cb in ip4ip6_err() (bsc#1263995).
  * CVE-2026-43126: ALSA: mixer: oss: Add card disconnect checkpoints
    (bsc#1264634).
  * CVE-2026-43190: netfilter: xt_tcpmss: check remaining length before reading
    optlen (bsc#1264848).
  * CVE-2026-43437: ALSA: pcm: fix use-after-free on linked stream runtime in
    snd_pcm_drain() (bsc#1265126).
  * CVE-2026-43499: rtmutex: Use waiter::task instead of current in
    remove_waiter() (bsc#1266001).

## 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:

  * SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE  
    zypper in -t patch SUSE-SLE-SERVER-11-SP4-LTSS-EXTREME-CORE-2026-2317=1

  * SUSE Linux Enterprise Server 11 SP4  
    zypper in -t patch SUSE-SLE-SERVER-11-SP4-LTSS-EXTREME-CORE-2026-2317=1

## Package List:

  * SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE (nosrc x86_64)
    * kernel-default-3.0.101-108.210.1
    * kernel-ec2-3.0.101-108.210.1
    * kernel-trace-3.0.101-108.210.1
    * kernel-xen-3.0.101-108.210.1
  * SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE (x86_64)
    * kernel-trace-base-3.0.101-108.210.1
    * kernel-ec2-debugsource-3.0.101-108.210.1
    * kernel-default-devel-debuginfo-3.0.101-108.210.1
    * kernel-xen-debuginfo-3.0.101-108.210.1
    * kernel-xen-base-3.0.101-108.210.1
    * kernel-syms-3.0.101-108.210.1
    * kernel-default-debuginfo-3.0.101-108.210.1
    * kernel-trace-devel-3.0.101-108.210.1
    * kernel-trace-debuginfo-3.0.101-108.210.1
    * kernel-default-devel-3.0.101-108.210.1
    * kernel-ec2-base-3.0.101-108.210.1
    * kernel-ec2-devel-debuginfo-3.0.101-108.210.1
    * kernel-xen-debugsource-3.0.101-108.210.1
    * kernel-trace-debugsource-3.0.101-108.210.1
    * kernel-trace-devel-debuginfo-3.0.101-108.210.1
    * kernel-xen-devel-3.0.101-108.210.1
    * kernel-source-3.0.101-108.210.1
    * kernel-ec2-debuginfo-3.0.101-108.210.1
    * kernel-xen-devel-debuginfo-3.0.101-108.210.1
    * kernel-default-debugsource-3.0.101-108.210.1
    * kernel-ec2-devel-3.0.101-108.210.1
    * kernel-default-base-3.0.101-108.210.1
  * SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE (noarch nosrc)
    * kernel-docs-3.0.101-108.210.1
  * SUSE Linux Enterprise Server 11 SP4 (nosrc x86_64)
    * kernel-default-3.0.101-108.210.1
    * kernel-ec2-3.0.101-108.210.1
    * kernel-trace-3.0.101-108.210.1
    * kernel-xen-3.0.101-108.210.1
  * SUSE Linux Enterprise Server 11 SP4 (x86_64)
    * kernel-trace-base-3.0.101-108.210.1
    * kernel-ec2-debugsource-3.0.101-108.210.1
    * kernel-default-devel-debuginfo-3.0.101-108.210.1
    * kernel-xen-debuginfo-3.0.101-108.210.1
    * kernel-xen-base-3.0.101-108.210.1
    * kernel-syms-3.0.101-108.210.1
    * kernel-default-debuginfo-3.0.101-108.210.1
    * kernel-trace-devel-3.0.101-108.210.1
    * kernel-trace-debuginfo-3.0.101-108.210.1
    * kernel-default-devel-3.0.101-108.210.1
    * kernel-ec2-base-3.0.101-108.210.1
    * kernel-ec2-devel-debuginfo-3.0.101-108.210.1
    * kernel-xen-debugsource-3.0.101-108.210.1
    * kernel-trace-debugsource-3.0.101-108.210.1
    * kernel-trace-devel-debuginfo-3.0.101-108.210.1
    * kernel-xen-devel-3.0.101-108.210.1
    * kernel-source-3.0.101-108.210.1
    * kernel-ec2-debuginfo-3.0.101-108.210.1
    * kernel-xen-devel-debuginfo-3.0.101-108.210.1
    * kernel-default-debugsource-3.0.101-108.210.1
    * kernel-ec2-devel-3.0.101-108.210.1
    * kernel-default-base-3.0.101-108.210.1
  * SUSE Linux Enterprise Server 11 SP4 (noarch nosrc)
    * kernel-docs-3.0.101-108.210.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-23271.html
  * https://www.suse.com/security/cve/CVE-2026-31402.html
  * https://www.suse.com/security/cve/CVE-2026-31607.html
  * https://www.suse.com/security/cve/CVE-2026-31685.html
  * https://www.suse.com/security/cve/CVE-2026-43037.html
  * https://www.suse.com/security/cve/CVE-2026-43126.html
  * https://www.suse.com/security/cve/CVE-2026-43190.html
  * https://www.suse.com/security/cve/CVE-2026-43437.html
  * https://www.suse.com/security/cve/CVE-2026-43499.html
  * https://www.suse.com/security/cve/CVE-2026-46243.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1260018
  * https://bugzilla.suse.com/show_bug.cgi?id=1261638
  * https://bugzilla.suse.com/show_bug.cgi?id=1263600
  * https://bugzilla.suse.com/show_bug.cgi?id=1263668
  * https://bugzilla.suse.com/show_bug.cgi?id=1263995
  * https://bugzilla.suse.com/show_bug.cgi?id=1264634
  * https://bugzilla.suse.com/show_bug.cgi?id=1264848
  * https://bugzilla.suse.com/show_bug.cgi?id=1265126
  * https://bugzilla.suse.com/show_bug.cgi?id=1266001

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