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SUSE Kernel Important Update for Multiple Security Issues 2026-3289-1

suse
Calendar Grey July 27, 2026
Scroller Suse
This important security update for SUSE's kernel addresses five vulnerabilities to enhance system safety.
SUSE released a critical security update for Linux Kernel Live Patch 29 addressing five vulnerabilities affecting various SUSE Linux Enterprise products, recommending installation ...

Summary

## This update for the SUSE Linux Enterprise Kernel 5.14.21-150500.55.116 fixes various security issues: The following security issues were fixed: * CVE-2026-23240: tls: Fix race condition in tls_sw_cancel_work_tx() (bsc#1262404). * CVE-2026-31738: vxlan: validate ND option lengths in vxlan_na_create (bsc#1264060). * CVE-2026-43038: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() (bsc#1271648). * CVE-2026-46113: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (bsc#1266970). * CVE-2026-53359: KVM: x86: Fix shadow paging use-after-free due to unexpected role (bsc#1270060). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

Topics%20covered

Topics Covered

security advisory kernel update SuSE vulnerability important system patch

References

* bsc#1262404

* bsc#1264060

* bsc#1266970

* bsc#1270060

* bsc#1271648

Cross-

* CVE-2026-23240

* CVE-2026-31738

* CVE-2026-43038

* CVE-2026-46113

* CVE-2026-53359

CVSS scores:

* CVE-2026-23240 ( 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-2026-23240 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-23240 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-31738 ( 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-2026-31738 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-31738 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-43038 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:3289-1
Release Date: 2026-07-27T15:36:28Z
Rating: important

Topics%20covered

Topics Covered

security advisory kernel update SuSE vulnerability important system patch

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