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SUSE Linux Micro Kernel Security Advisory SUSE-SU-2026-21933-1 Key Alert

suse
Calendar Grey June 2, 2026
Dist Suse Esm H88
Important security update for SUSE Linux Micro Kernel fixes six critical issues, ensuring system integrity and safety.
An update that solves six vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.4.0-30.1 fixes various security issues The following security issues were fixed: * CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption (bsc#1264096). * CVE-2026-23243: RDMA/umad: Reject negative data_len in ib_umad_write (bsc#1259798). * CVE-2026-23274: netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels (bsc#1260908). * CVE-2026-23317: drm/vmwgfx: Return the correct value in vmw_translate_ptr functions (bsc#1260563). * CVE-2026-46300: FragNesia attack: another xfrm/esp based local root exploit (bsc#1265224). * CVE-2026-46333: ptrace: slightly saner 'get_dumpable()' logic (bsc#1265384). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like

Topics%20covered

Topics Covered

security advisory security issue local exploit important kernel SUSE Linux Micro

References

* bsc#1259798

* bsc#1260563

* bsc#1260908

* bsc#1264096

* bsc#1265224

* bsc#1265384

Cross-

* CVE-2025-54518

* CVE-2026-23243

* CVE-2026-23274

* CVE-2026-23317

* CVE-2026-46300

* CVE-2026-46333

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-2026-23243 ( 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-2026-23243 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21933-1
Release Date: 2026-06-01T09:26:53Z
Rating: important

Topics%20covered

Topics Covered

security advisory security issue local exploit important kernel SUSE Linux Micro

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