Security update for the Linux Kernel (Live Patch 54 for SUSE Linux Enterprise 15 SP4)

Announcement ID:	SUSE-SU-2026:2991-1
Release Date:	2026-07-14T16:05:09Z
Rating:	important
References:	bsc#1264094 bsc#1265197 bsc#1266015 bsc#1266265 bsc#1267206 bsc#1267698 bsc#1267723 bsc#1267893 bsc#1268662 bsc#1269023
Cross-References:	CVE-2026-31758 CVE-2026-43037 CVE-2026-43501 CVE-2026-45970 CVE-2026-46120 CVE-2026-46173 CVE-2026-46227 CVE-2026-46243 CVE-2026-52909 CVE-2026-52943
CVSS scores:	CVE-2026-31758 ( 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-2026-31758 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-31758 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-2026-43037 ( NVD ): 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-43501 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N CVE-2026-43501 ( SUSE ): 7.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H CVE-2026-43501 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-43501 ( NVD ): 7.5 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2026-45970 ( 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-2026-45970 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-45970 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-46120 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2026-46120 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-46173 ( 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-2026-46173 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-46173 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-46227 ( 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-2026-46227 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-46227 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-46227 ( 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 ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N 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 ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-52909 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N CVE-2026-52909 ( SUSE ): 7.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H CVE-2026-52909 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-52943 ( 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-2026-52943 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-52943 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-52943 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:	openSUSE Leap 15.4 SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise Live Patching 15-SP4 SUSE Linux Enterprise Micro 5.3 SUSE Linux Enterprise Micro 5.4 SUSE Linux Enterprise Real Time 15 SP4 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP4

An update that solves 10 vulnerabilities can now be installed.

Description:

This update for the SUSE Linux Enterprise Kernel 5.14.21-150400.24.219 fixes various security issues

The following security issues were fixed:

• CVE-2026-31758: usb: usbtmc: Flush anchored URBs in usbtmc_release (bsc#1264094).
• CVE-2026-43037: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (bsc#1265197).
• CVE-2026-43501: ipv6: rpl: reserve mac_len headroom when recompressed SRH grows (bsc#1266015).
• CVE-2026-45970: bonding: alb: fix UAF in rlb_arp_recv during bond up/down (bsc#1267206).
• CVE-2026-46120: ip6_gre: Use cached t->net in ip6erspan_changelink() (bsc#1267893).
• CVE-2026-46173: exit: prevent preemption of oopsing TASK_DEAD task (bsc#1267723).
• CVE-2026-46227: sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL (bsc#1267698).
• CVE-2026-46243: smb: client: reject userspace cifs.spnego descriptions (CIFSwitch) (bsc#1266265).
• CVE-2026-52909: ip6_vti: set netns_immutable on the fallback device (bsc#1268662).
• CVE-2026-52943: net: skbuff: fix missing zerocopy reference in pskb_carve helpers (bsc#1269023).

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-SP4
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2026-2991=1
• openSUSE Leap 15.4
  zypper in -t patch SUSE-2026-2991=1

Package List:

• SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
  • kernel-livepatch-5_14_21-150400_24_219-default-2-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_54-debugsource-2-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_219-default-debuginfo-2-150400.2.1
• openSUSE Leap 15.4 (ppc64le s390x x86_64)
  • kernel-livepatch-5_14_21-150400_24_219-default-2-150400.2.1
  • kernel-livepatch-SLE15-SP4_Update_54-debugsource-2-150400.2.1
  • kernel-livepatch-5_14_21-150400_24_219-default-debuginfo-2-150400.2.1

References:

• https://www.suse.com/security/cve/CVE-2026-31758.html
• https://www.suse.com/security/cve/CVE-2026-43037.html
• https://www.suse.com/security/cve/CVE-2026-43501.html
• https://www.suse.com/security/cve/CVE-2026-45970.html
• https://www.suse.com/security/cve/CVE-2026-46120.html
• https://www.suse.com/security/cve/CVE-2026-46173.html
• https://www.suse.com/security/cve/CVE-2026-46227.html
• https://www.suse.com/security/cve/CVE-2026-46243.html
• https://www.suse.com/security/cve/CVE-2026-52909.html
• https://www.suse.com/security/cve/CVE-2026-52943.html
• https://bugzilla.suse.com/show_bug.cgi?id=1264094
• https://bugzilla.suse.com/show_bug.cgi?id=1265197
• https://bugzilla.suse.com/show_bug.cgi?id=1266015
• https://bugzilla.suse.com/show_bug.cgi?id=1266265
• https://bugzilla.suse.com/show_bug.cgi?id=1267206
• https://bugzilla.suse.com/show_bug.cgi?id=1267698
• https://bugzilla.suse.com/show_bug.cgi?id=1267723
• https://bugzilla.suse.com/show_bug.cgi?id=1267893
• https://bugzilla.suse.com/show_bug.cgi?id=1268662
• https://bugzilla.suse.com/show_bug.cgi?id=1269023