SUSE Linux Micro 6.0 Kernel RT Security Update 2026-21478-1 CVE-2026-23204
suse
May 6, 2026
An update that solves two vulnerabilities can now be installed.
Summary
## This update for the SUSE Linux Enterprise Kernel 6.4.0-40.1 fixes various security issues The following security issues were fixed: * CVE-2026-23204: net/sched: cls_u32: use skb_header_pointer_careful() (bsc#1259126). * CVE-2026-31431: crypto: algif_aead - Revert to operating out-of-place (bsc#1263689). ## 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 6.0 zypper in -t patch SUSE-SLE-Micro-6.0-kernel-384=1 ## Package List: * SUSE Linux Micro 6.0 (x86_64) * kernel-livepatch-MICRO-6-0-RT_Update_18-debugsource-3-1.1 * kernel-livepatch-6_4_0-40-rt-3-1.1 * kernel-livepatch-6_4_0-40-rt-debuginfo-3-1.1
Topics Covered
References
* bsc#1259126
* bsc#1263689
Cross-
* CVE-2026-23204
* CVE-2026-31431
CVSS scores:
* CVE-2026-23204 ( SUSE ): 6.8
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
* CVE-2026-23204 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-23204 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
* CVE-2026-23204 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
* CVE-2026-31431 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-31431 ( 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 6.0
An update that solves two vulnerabilities can now be installed.
##
* https://www.suse.com/security/cve/CVE-2026-23204.html
* https://www.suse.com/security/cve/CVE-2026-31431.html
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Severity
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Announcement ID: SUSE-SU-2026:21478-1
Release Date: 2026-05-05T13:07:21Z
Rating: important
Topics Covered
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