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openSUSE Kernel Important Fix Heap Overflow and More 2026-2511-1

opensuse
Calendar Grey June 23, 2026
Dist Opensuse Esm H88
Update for openSUSE fixing five security issues in the kernel addressing important vulnerabilities for system integrity.
An update that solves five vulnerabilities can now be installed.

Description

This update for the SUSE Linux Enterprise Kernel 5.14.21-150400.24.214 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 buffer overflow important kernel network issue 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-SP4

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2026-2513=1 SUSE-SLE-

Module-Live-Patching-15-SP4-2026-2510=1 SUSE-SLE-Module-Live-

Patching-15-SP4-2026-2511=1 SUSE-SLE-Module-Live-Patching-15-SP4-2026-2512=1

* openSUSE Leap 15.4

zypper in -t patch SUSE-2026-2510=1 SUSE-2026-2511=1 SUSE-2026-2512=1

SUSE-2026-2513=1

Package List

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

* kernel-livepatch-5_14_21-150400_24_197-default-5-150400.2.1

* kernel-livepatch-5_14_21-150400_24_205-default-debuginfo-4-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_47-debugsource-9-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_49-debugsource-5-150400.2.1

* kernel-livepatch-5_14_21-150400_24_187-default-debuginfo-9-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_53-debugsource-2-150400.2.1

* kernel-livepatch-5_14_21-150400_24_214-default-2-150400.2.1

* kernel-livepatch-SLE15-SP4_Update_51-debugsource-4-150400.2.1

* kernel-livepatch-5_14_21-150400_24_214-default-debuginfo-2-150400.2.1

* kernel-livepatch-5_14_21-150400_24_197-default-debuginfo-5-150400.2.1

* kernel-livepatch-5_14_21-150400_24_205-default-4-150400.2.1

* kernel-livepatch-5_14_21-150400_24_187-default-9-150400.2.1

* openSUSE Leap 15.4 (ppc64le s390x x86_64)

* kernel-livepatch-5_14_21-150400_24_197-default-5-150400.2.1

*...

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-2026:2511-1
Release Date: 2026-06-23T05:04:26Z
Affected Products: * openSUSE Leap 15.4 * SUSE Linux Enterprise High Performance Computing 15 SP4 * SUSE Linux Enterprise Live Patching 15-SP4 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Real Time 15 SP4 * SUSE Linux Enterprise Server 15 SP4 * SUSE Linux Enterprise Server for SAP Applications 15 SP4

Topics%20covered

Topics Covered

security advisory buffer overflow important kernel network issue OpenSUSE

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