Security update for the Linux Kernel

Announcement ID: SUSE-SU-2026:1959-1
Release Date: 2026-05-18T08:02:18Z
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-2026-43284 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2026-43284 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2026-43284 ( NVD ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2026-43500 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2026-43500 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-43500 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • 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
  • CVE-2026-46333 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-46333 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Products:
  • SUSE Linux Enterprise Live Patching 15-SP7
  • SUSE Linux Enterprise Real Time 15 SP7
  • SUSE Linux Enterprise Server 15 SP7
  • SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • SUSE Real Time Module 15-SP7

An update that solves five vulnerabilities can now be installed.

Description:

The SUSE Linux Enterprise 15 SP7 RT 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).
  • CVE-2026-43284: xfrm: esp: avoid in-place decrypt on shared skb frags (bsc#1264449).
  • CVE-2026-43500: rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present (aka Dirty Frag) (bsc#1264450)
  • CVE-2026-46333: ptrace: Logic bug in the Linux kernel's __ptrace_may_access() function (bsc#1265308).

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 Enterprise Live Patching 15-SP7
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP7-2026-1959=1
  • SUSE Real Time Module 15-SP7
    zypper in -t patch SUSE-SLE-Module-RT-15-SP7-2026-1959=1

Package List:

  • SUSE Linux Enterprise Live Patching 15-SP7 (x86_64)
    • kernel-livepatch-6_4_0-150700_7_51-rt-debuginfo-1-150700.1.7.1
    • kernel-livepatch-6_4_0-150700_7_51-rt-1-150700.1.7.1
    • kernel-livepatch-SLE15-SP7-RT_Update_14-debugsource-1-150700.1.7.1
  • SUSE Real Time Module 15-SP7 (x86_64)
    • kernel-rt-debugsource-6.4.0-150700.7.51.1
    • cluster-md-kmp-rt-debuginfo-6.4.0-150700.7.51.1
    • kernel-rt-devel-6.4.0-150700.7.51.1
    • ocfs2-kmp-rt-debuginfo-6.4.0-150700.7.51.1
    • dlm-kmp-rt-debuginfo-6.4.0-150700.7.51.1
    • dlm-kmp-rt-6.4.0-150700.7.51.1
    • gfs2-kmp-rt-6.4.0-150700.7.51.1
    • gfs2-kmp-rt-debuginfo-6.4.0-150700.7.51.1
    • kernel-rt-devel-debuginfo-6.4.0-150700.7.51.1
    • ocfs2-kmp-rt-6.4.0-150700.7.51.1
    • cluster-md-kmp-rt-6.4.0-150700.7.51.1
    • kernel-rt-debuginfo-6.4.0-150700.7.51.1
    • kernel-syms-rt-6.4.0-150700.7.51.1
  • SUSE Real Time Module 15-SP7 (noarch)
    • kernel-source-rt-6.4.0-150700.7.51.1
    • kernel-devel-rt-6.4.0-150700.7.51.1
  • SUSE Real Time Module 15-SP7 (nosrc x86_64)
    • kernel-rt-6.4.0-150700.7.51.1

References: