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