Security update for ucode-intel

Announcement ID:	SUSE-SU-2026:0668-1
Release Date:	2026-02-26T15:21:26Z
Rating:	important
References:	bsc#1229129 bsc#1258046
Cross-References:	CVE-2024-24853 CVE-2025-31648
CVSS scores:	CVE-2024-24853 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVE-2024-24853 ( SUSE ): 7.2 CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H CVE-2025-31648 ( SUSE ): 1.8 CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVE-2025-31648 ( SUSE ): 3.9 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N CVE-2025-31648 ( NVD ): 1.8 CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVE-2025-31648 ( NVD ): 3.9 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Affected Products:	Basesystem Module 15-SP7 openSUSE Leap 15.6 SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP4 SUSE Linux Enterprise High Performance Computing 15 SP5 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 SUSE Linux Enterprise Micro 5.2 SUSE Linux Enterprise Micro 5.3 SUSE Linux Enterprise Micro 5.4 SUSE Linux Enterprise Micro 5.5 SUSE Linux Enterprise Micro for Rancher 5.2 SUSE Linux Enterprise Micro for Rancher 5.3 SUSE Linux Enterprise Micro for Rancher 5.4 SUSE Linux Enterprise Real Time 15 SP7 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server 15 SP4 LTSS SUSE Linux Enterprise Server 15 SP5 SUSE Linux Enterprise Server 15 SP5 LTSS SUSE Linux Enterprise Server 15 SP6 SUSE Linux Enterprise Server 15 SP6 LTSS SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP5 SUSE Linux Enterprise Server for SAP Applications 15 SP6 SUSE Linux Enterprise Server for SAP Applications 15 SP7

An update that solves two vulnerabilities can now be installed.

Description:

This update for ucode-intel fixes the following issues:

• Intel CPU Microcode was updated to the 20260210 release (bsc#1258046)
• CVE-2024-24853: Updated fix for incorrect behavior order in transition between executive monitor and SMI transfer monitor (STM) in some Intel(R) Processor may allow a privileged user to potentially enable escalation of privilege via local access. (bsc#1229129)
• CVE-2025-31648: Improper handling of values in the microcode flow for some Intel Processor Family may allow an escalation of privilege. (bsc#1258046)

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 Micro 5.2
  zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-668=1
• SUSE Linux Enterprise Micro for Rancher 5.2
  zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-668=1
• openSUSE Leap 15.6
  zypper in -t patch openSUSE-SLE-15.6-2026-668=1
• SUSE Linux Enterprise Micro for Rancher 5.3
  zypper in -t patch SUSE-SLE-Micro-5.3-2026-668=1
• SUSE Linux Enterprise Micro 5.3
  zypper in -t patch SUSE-SLE-Micro-5.3-2026-668=1
• SUSE Linux Enterprise Micro for Rancher 5.4
  zypper in -t patch SUSE-SLE-Micro-5.4-2026-668=1
• SUSE Linux Enterprise Micro 5.4
  zypper in -t patch SUSE-SLE-Micro-5.4-2026-668=1
• SUSE Linux Enterprise Micro 5.5
  zypper in -t patch SUSE-SLE-Micro-5.5-2026-668=1
• Basesystem Module 15-SP7
  zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-668=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-668=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-668=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-668=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-668=1
• SUSE Linux Enterprise Server 15 SP4 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-668=1
• SUSE Linux Enterprise Server 15 SP5 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-668=1
• SUSE Linux Enterprise Server 15 SP6 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-668=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-668=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-668=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP6
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-668=1

Package List:

• SUSE Linux Enterprise Micro 5.2 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Micro for Rancher 5.2 (x86_64)
  • ucode-intel-20260210-150200.62.1
• openSUSE Leap 15.6 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Micro for Rancher 5.3 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Micro 5.3 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Micro for Rancher 5.4 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Micro 5.4 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Micro 5.5 (x86_64)
  • ucode-intel-20260210-150200.62.1
• Basesystem Module 15-SP7 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Server 15 SP4 LTSS (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Server 15 SP6 LTSS (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP4 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (x86_64)
  • ucode-intel-20260210-150200.62.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP6 (x86_64)
  • ucode-intel-20260210-150200.62.1

References:

• https://www.suse.com/security/cve/CVE-2024-24853.html
• https://www.suse.com/security/cve/CVE-2025-31648.html
• https://bugzilla.suse.com/show_bug.cgi?id=1229129
• https://bugzilla.suse.com/show_bug.cgi?id=1258046