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SUSE Linux Enterprise 15 SP7 Kernel RT Vital Security Update 2026-2503-1

suse
Calendar Grey June 23, 2026
Dist Suse Esm H88
Security update for SUSE Linux Enterprise 15 SP7 solves critical issues like heap overflow and provides important fixes.
An update that solves five vulnerabilities and has one security fix can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.51 fixes various security issues The following security issues were fixed: * 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 YaST online_update or "zypper patch". Alternatively you can run the command listed for your product:

Topics%20covered

Topics Covered

security advisory security update SuSE important heap overflow kernel

References

* bsc#1261640

* bsc#1263088

* bsc#1263902

* bsc#1266229

* bsc#1267625

* bsc#1268282

Cross-

* CVE-2026-31402

* CVE-2026-31504

* CVE-2026-31694

* CVE-2026-43503

* CVE-2026-46323

CVSS scores:

* 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

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-2026-31504 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-31504 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-31694 ( SUSE ): 8.5

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2503-1
Release Date: 2026-06-22T20:04:43Z
Rating: important

Topics%20covered

Topics Covered

security advisory security update SuSE important heap overflow kernel

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