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SUSE Linux Enterprise Kernel Important Security Fixes 2026-2532-1

suse
Calendar Grey June 23, 2026
Dist Suse Esm H88
An important update for SUSE Linux solves multiple issues in the Kernel, enhancing system security significantly.
An update that solves six vulnerabilities and has one security fix can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.53.34 fixes various security issues The following security issues were fixed: * CVE-2026-23278: netfilter: nf_tables: always walk all pending catchall elements (bsc#1260907). * 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-2026-46323: net: gro: don't merge zcopy skbs (bsc#1268282). * net/sched: fix pedit partial COW leading to page cache (bsc#1267625). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like

Topics%20covered

Topics Covered

security advisory SuSE security fix important heap overflow kernel

References

* bsc#1260907

* bsc#1261640

* bsc#1263088

* bsc#1263902

* bsc#1266229

* bsc#1267625

* bsc#1268282

Cross-

* CVE-2026-23278

* CVE-2026-31402

* CVE-2026-31504

* CVE-2026-31694

* CVE-2026-43503

* CVE-2026-46323

CVSS scores:

* CVE-2026-23278 ( SUSE ): 7.3

CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2026-23278 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-23278 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-31402 ( SUSE ): 8.8

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

* CVE-2026-31402 ( SUSE ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

* CVE-2026-31402 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-31504 ( SUSE ): 7.3

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2532-1
Release Date: 2026-06-23T12:05:59Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE security fix important heap overflow kernel

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