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openSUSE Kernel Major NFS Heap Overflow and Live Patch Concerns 2026-2571-1

opensuse
Calendar Grey June 23, 2026
Dist Opensuse Esm H88
An update for openSUSE addresses five important vulnerabilities in the Linux Kernel with detailed patch instructions.
An update that solves five vulnerabilities can now be installed.

Description

This update for the SUSE Linux Enterprise Kernel 5.14.21-150500.55.163 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).

Topics%20covered

Topics Covered

security advisory security issue important heap overflow kernel OpenSUSE

Patch

## 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-SP5

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-2593=1 SUSE-SLE-

Module-Live-Patching-15-SP5-2026-2572=1 SUSE-SLE-Module-Live-

Patching-15-SP5-2026-2586=1 SUSE-SLE-Module-Live-Patching-15-SP5-2026-2573=1

SUSE-SLE-Module-Live-Patching-15-SP5-2026-2574=1 SUSE-SLE-Module-Live-

Patching-15-SP5-2026-2576=1 SUSE-SLE-Module-Live-Patching-15-SP5-2026-2577=1

SUSE-SLE-Module-Live-Patching-15-SP5-2026-2587=1

* openSUSE Leap 15.5

zypper in -t patch SUSE-2026-2593=1 SUSE-2026-2572=1 SUSE-2026-2586=1

SUSE-2026-2573=1 SUSE-2026-2574=1 SUSE-2026-2576=1 SUSE-2026-2577=1

SUSE-2026-2587=1

* openSUSE Leap 15.4

zypper in -t patch SUSE-2026-2571=1 SUSE-2026-2570=1

* SUSE Linux Enterprise Live Patching 15-SP4

zypper in -t patch...

Read the Full Advisory

Package List

* SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)

* kernel-livepatch-5_14_21-150400_24_194-default-7-150400.2.1

* kernel-livepatch-5_14_21-150400_24_200-default-5-150400.2.1

* kernel-livepatch-5_14_21-150400_24_194-default-debuginfo-7-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_48-debugsource-7-150400.2.1

* kernel-livepatch-5_14_21-150400_24_200-default-debuginfo-5-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_50-debugsource-5-150400.2.1

* openSUSE Leap 15.4 (ppc64le s390x x86_64)

* kernel-livepatch-5_14_21-150400_24_194-default-7-150400.2.1

* kernel-livepatch-5_14_21-150400_24_200-default-5-150400.2.1

* kernel-livepatch-5_14_21-150400_24_194-default-debuginfo-7-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_48-debugsource-7-150400.2.1

* kernel-livepatch-5_14_21-150400_24_200-default-debuginfo-5-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_50-debugsource-5-150400.2.1

* SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)

*...

Read the Full Advisory

References

* bsc#1261640

* bsc#1263088

* bsc#1263902

* bsc#1266229

* bsc#1268282

## References:

* https://www.suse.com/security/cve/CVE-2026-31402.html

* https://www.suse.com/security/cve/CVE-2026-31504.html

* https://www.suse.com/security/cve/CVE-2026-31694.html

* https://www.suse.com/security/cve/CVE-2026-43503.html

* https://www.suse.com/security/cve/CVE-2026-46323.html

* https://bugzilla.suse.com/show_bug.cgi?id=1261640

* https://bugzilla.suse.com/show_bug.cgi?id=1263088

* https://bugzilla.suse.com/show_bug.cgi?id=1263902

* https://bugzilla.suse.com/show_bug.cgi?id=1266229

* https://bugzilla.suse.com/show_bug.cgi?id=1268282

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2571-1
Release Date: 2026-06-23T15:35:23Z
Affected Products: * openSUSE Leap 15.4 * openSUSE Leap 15.5 * SUSE Linux Enterprise High Performance Computing 15 SP4 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise Live Patching 15-SP4 * SUSE Linux Enterprise Live Patching 15-SP5 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Micro 5.5 * SUSE Linux Enterprise Real Time 15 SP4 * SUSE Linux Enterprise Real Time 15 SP5 * SUSE Linux Enterprise Server 15 SP4 * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server for SAP Applications 15 SP4 * SUSE Linux Enterprise Server for SAP Applications 15 SP5

Topics%20covered

Topics Covered

security advisory security issue important heap overflow kernel OpenSUSE

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