Security update for the Linux Kernel

Announcement ID: SUSE-SU-2026:21673-1
Release Date: 2026-05-15T09:50:08Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2025-54518 ( 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-2025-54518 ( SUSE ): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2025-54518 ( NVD ): 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/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-2026-46300 ( SUSE ): 8.6 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • CVE-2026-46300 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Micro 6.0

An update that solves two vulnerabilities can now be installed.

Description:

The SUSE Linux Enterprise Micro 6.0 and Micro 6.1 kernel was updated to fix various security issues

The following security issues were fixed:

  • CVE-2025-54518: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache (bsc#1264013).
  • CVE-2026-46300: net: skbuff: propagate shared-frag marker through pskb_copy() (bsc#1265209).

The following non security issue was fixed:

  • io-wq: check that the predecessor is hashed in io_wq_remove_pending() (git-fixes).

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 Micro 6.0
    zypper in -t patch SUSE-SLE-Micro-6.0-kernel-429=1

Package List:

  • SUSE Linux Micro 6.0 (noarch)
    • kernel-devel-6.4.0-44.1
    • kernel-source-6.4.0-44.1
    • kernel-macros-6.4.0-44.1
  • SUSE Linux Micro 6.0 (aarch64 nosrc s390x x86_64)
    • kernel-default-6.4.0-44.1
  • SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    • kernel-default-debuginfo-6.4.0-44.1
    • kernel-default-debugsource-6.4.0-44.1
  • SUSE Linux Micro 6.0 (aarch64 x86_64)
    • kernel-default-base-6.4.0-44.1.21.21
  • SUSE Linux Micro 6.0 (s390x x86_64)
    • kernel-default-livepatch-6.4.0-44.1
  • SUSE Linux Micro 6.0 (nosrc x86_64)
    • kernel-kvmsmall-6.4.0-44.1
  • SUSE Linux Micro 6.0 (x86_64)
    • kernel-kvmsmall-debugsource-6.4.0-44.1
    • kernel-kvmsmall-debuginfo-6.4.0-44.1

References: