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SUSE Kernel RT Important Heap Overflow Local Root Exploit Vuln 2026-22411-1

suse
Calendar Grey July 3, 2026
Dist Suse Esm H88
SUSE's important security update addresses several vulnerabilities in Kernel RT for Micro 6.0, improving system safety.
An update that solves eight vulnerabilities and has one fix can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.4.0-42.1 fixes various security issues The following security issues were fixed: * CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption (bsc#1264096). * CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (bsc#1261640). * CVE-2026-31504: net: fix fanout UAF in packet_release() via NETDEV_UP race (bsc#1263088). * CVE-2026-31694: fuse: reject oversized dirents in page cache (bsc#1263902). * CVE-2026-43503: final dirty.frag related fixes (bsc#1266229). * CVE-2026-46300: FragNesia attack: another xfrm/esp based local root exploit (bsc#1265224). * CVE-2026-46323: net: gro: don't merge zcopy skbs (bsc#1268282). * CVE-2026-46333: ptrace: slightly saner 'get_dumpable()' logic (bsc#1265384).

Topics%20covered

Topics Covered

security advisory local root exploit SuSE important heap overflow kernel

References

* bsc#1261640

* bsc#1263088

* bsc#1263902

* bsc#1264096

* bsc#1265224

* bsc#1265384

* bsc#1266229

* bsc#1267625

* bsc#1268282

Cross-

* CVE-2025-54518

* CVE-2026-31402

* CVE-2026-31504

* CVE-2026-31694

* CVE-2026-43503

* CVE-2026-46300

* CVE-2026-46323

* 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-2025-54518 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-31402 ( SUSE ): 8.8

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:22411-1
Release Date: 2026-06-24T09:59:05Z
Rating: important

Topics%20covered

Topics Covered

security advisory local root exploit SuSE important heap overflow kernel

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