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openSUSE Kernel Important Fixes Denial of Service 2026-2638-1

opensuse
Calendar Grey June 26, 2026
Dist Opensuse Esm H88
This advisory details important security updates for the openSUSE kernel, addressing 21 vulnerabilities with solutions.
An update that solves 21 vulnerabilities and has two security fixes can now be installed.

Description

The SUSE Linux Enterprise 15 SP4 kernel was updated to fix various security

issues

The following security issues were fixed:

* CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs

(bsc#1266290).

* CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished

delayed work (bsc#1255416).

* CVE-2026-23392: netfilter: nf_tables: release flowtable after rcu grace

period on error (bsc#1260531).

* CVE-2026-31473: media: mc, v4l2: serialize REINIT and REQBUFS with

req_queue_mutex (bsc#1262663).

* CVE-2026-31500: Bluetooth: btintel: serialize btintel_hw_error() with

hci_req_sync_lock (bsc#1262993).

* CVE-2026-31613: smb: client: fix OOB reads parsing symlink error response

(bsc#1263769).

* CVE-2026-31697: crypto: ccp: Don't attempt to copy ID to userspace if PSP

command failed (bsc#1264116).

* CVE-2026-31698: crypto: ccp: Don't attempt to copy PDH cert to userspace if

PSP command failed (bsc#1263880).

*...

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Topics%20covered

Topics Covered

security advisory denial of service security issue important 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-SP4

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2026-2638=1

* SUSE Linux Enterprise Micro for Rancher 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-2638=1

* SUSE Linux Enterprise Micro 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-2638=1

* SUSE Linux Enterprise Server 15 SP4 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-2638=1

* SUSE Linux Enterprise High Availability Extension 15 SP4

zypper in -t patch SUSE-SLE-Product-HA-15-SP4-2026-2638=1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4

zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-2638=1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4

zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-2638=1

* SUSE Linux Enterprise Server for SAP...

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Package List

* SUSE Linux Enterprise Server for SAP Applications 15 SP4 (nosrc ppc64le

x86_64)

* kernel-default-5.14.21-150400.24.225.2

* SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)

* reiserfs-kmp-default-debuginfo-5.14.21-150400.24.225.2

* kernel-default-base-5.14.21-150400.24.225.2.150400.24.114.2

* kernel-default-debugsource-5.14.21-150400.24.225.2

* kernel-obs-build-debugsource-5.14.21-150400.24.225.2

* kernel-default-devel-5.14.21-150400.24.225.2

* kernel-obs-build-5.14.21-150400.24.225.2

* kernel-syms-5.14.21-150400.24.225.1

* kernel-default-debuginfo-5.14.21-150400.24.225.2

* reiserfs-kmp-default-5.14.21-150400.24.225.2

* kernel-default-devel-debuginfo-5.14.21-150400.24.225.2

* SUSE Linux Enterprise Server for SAP Applications 15 SP4 (noarch)

* kernel-source-5.14.21-150400.24.225.2

* kernel-macros-5.14.21-150400.24.225.2

* kernel-devel-5.14.21-150400.24.225.2

* SUSE Linux Enterprise Server for SAP Applications 15 SP4 (noarch nosrc)

* kernel-docs-5.14.21-150400.24.225.1

* SUSE...

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References

* bsc#1255416

* bsc#1258538

* bsc#1260531

* bsc#1262663

* bsc#1262993

* bsc#1263769

* bsc#1263879

* bsc#1263880

* bsc#1264076

* bsc#1264116

* bsc#1264470

* bsc#1264610

* bsc#1266214

* bsc#1266290

* bsc#1267214

* bsc#1267361

* bsc#1267369

* bsc#1267381

* bsc#1267387

* bsc#1267621

* bsc#1267640

* bsc#1267652

* bsc#1267697

## References:

* https://www.suse.com/security/cve/CVE-2025-10263.html

* https://www.suse.com/security/cve/CVE-2025-68324.html

* https://www.suse.com/security/cve/CVE-2026-23392.html

* https://www.suse.com/security/cve/CVE-2026-31473.html

* https://www.suse.com/security/cve/CVE-2026-31500.html

* https://www.suse.com/security/cve/CVE-2026-31613.html

* https://www.suse.com/security/cve/CVE-2026-31697.html

* https://www.suse.com/security/cve/CVE-2026-31698.html

* https://www.suse.com/security/cve/CVE-2026-31699.html

* https://www.suse.com/security/cve/CVE-2026-31759.html

* https://www.suse.com/security/cve/CVE-2026-43077.html

* https://www.suse.com/security/cve/CVE-2026-43198.html

*...

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Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2638-1
Release Date: 2026-06-26T06:37:49Z
Affected Products: * openSUSE Leap 15.4 * SUSE Linux Enterprise High Availability Extension 15 SP4 * SUSE Linux Enterprise High Performance Computing 15 SP4 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 * SUSE Linux Enterprise Live Patching 15-SP4 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Micro for Rancher 5.3 * SUSE Linux Enterprise Micro for Rancher 5.4 * SUSE Linux Enterprise Real Time 15 SP4 * SUSE Linux Enterprise Server 15 SP4 * SUSE Linux Enterprise Server 15 SP4 LTSS * SUSE Linux Enterprise Server for SAP Applications 15 SP4 * SUSE Manager Proxy 4.3 * SUSE Manager Retail Branch Server 4.3 * SUSE Manager Server 4.3

Topics%20covered

Topics Covered

security advisory denial of service security issue important kernel OpenSUSE

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