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openSUSE 15.5 Kernel Important Security Update Advisory 2026-2421-1

opensuse
Calendar Grey June 16, 2026
Dist Opensuse Esm H88
Critical update released for openSUSE addressing eight important security issue in the kernel. Ensure system stability.
An update that solves eight vulnerabilities can now be installed.

Description

The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security

issues

The following security issues were fixed:

* CVE-2026-31629: nfc: llcp: add missing return after LLCP_CLOSED checks

(bsc#1263790).

* CVE-2026-43037: ip6_tunnel: clear skb2->cb in ip4ip6_err() (bsc#1263995).

* CVE-2026-43206: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set()

(bsc#1264551).

* CVE-2026-43499: rtmutex: Use waiter::task instead of current in

remove_waiter() (bsc#1266001).

* CVE-2026-43501: ipv6: rpl: reserve mac_len headroom when recompressed SRH

grows (bsc#1266009).

* CVE-2026-45852: RDMA/rxe: Fix double free in rxe_srq_from_init

(bsc#1266711).

* CVE-2026-46043: RDMA/rxe: Validate pad and ICRC before payload_size() in

rxe_rcv (bsc#1266901).

* CVE-2026-46243: smb: client: reject userspace cifs.spnego descriptions

(CIFSwitch) (bsc#1266238).

## Special Instructions and Notes:

* Please reboot the system after installing this update.

Topics%20covered

Topics Covered

security advisory security issue important kernel system update 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:

* openSUSE Leap 15.5

zypper in -t patch SUSE-2026-2421=1

* SUSE Linux Enterprise Micro 5.5

zypper in -t patch SUSE-SLE-Micro-5.5-2026-2421=1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5

zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-2421=1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5

zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-2421=1

* SUSE Linux Enterprise Server 15 SP5 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-2421=1

* SUSE Linux Enterprise Live Patching 15-SP5

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-2421=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP5

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-2421=1

Package List

* openSUSE Leap 15.5 (noarch nosrc)

* kernel-docs-5.14.21-150500.55.169.1

* openSUSE Leap 15.5 (noarch)

* kernel-source-vanilla-5.14.21-150500.55.169.1

* kernel-source-5.14.21-150500.55.169.1

* kernel-macros-5.14.21-150500.55.169.1

* kernel-devel-5.14.21-150500.55.169.1

* kernel-docs-html-5.14.21-150500.55.169.1

* openSUSE Leap 15.5 (aarch64 ppc64le s390x x86_64)

* kernel-default-devel-5.14.21-150500.55.169.1

* kernel-syms-5.14.21-150500.55.169.1

* kselftests-kmp-default-debuginfo-5.14.21-150500.55.169.1

* ocfs2-kmp-default-debuginfo-5.14.21-150500.55.169.1

* gfs2-kmp-default-5.14.21-150500.55.169.1

* cluster-md-kmp-default-5.14.21-150500.55.169.1

* kernel-default-livepatch-5.14.21-150500.55.169.1

* dlm-kmp-default-debuginfo-5.14.21-150500.55.169.1

* kernel-obs-build-debugsource-5.14.21-150500.55.169.1

* cluster-md-kmp-default-debuginfo-5.14.21-150500.55.169.1

* kernel-obs-build-5.14.21-150500.55.169.1

* dlm-kmp-default-5.14.21-150500.55.169.1

* ocfs2-kmp-default-5.14.21-150500.55.169.1

*...

Read the Full Advisory

References

* bsc#1263790

* bsc#1263995

* bsc#1264551

* bsc#1266001

* bsc#1266009

* bsc#1266238

* bsc#1266711

* bsc#1266901

## References:

* https://www.suse.com/security/cve/CVE-2026-31629.html

* https://www.suse.com/security/cve/CVE-2026-43037.html

* https://www.suse.com/security/cve/CVE-2026-43206.html

* https://www.suse.com/security/cve/CVE-2026-43499.html

* https://www.suse.com/security/cve/CVE-2026-43501.html

* https://www.suse.com/security/cve/CVE-2026-45852.html

* https://www.suse.com/security/cve/CVE-2026-46043.html

* https://www.suse.com/security/cve/CVE-2026-46243.html

* https://bugzilla.suse.com/show_bug.cgi?id=1263790

* https://bugzilla.suse.com/show_bug.cgi?id=1263995

* https://bugzilla.suse.com/show_bug.cgi?id=1264551

* https://bugzilla.suse.com/show_bug.cgi?id=1266001

* https://bugzilla.suse.com/show_bug.cgi?id=1266009

* https://bugzilla.suse.com/show_bug.cgi?id=1266238

* https://bugzilla.suse.com/show_bug.cgi?id=1266711

* https://bugzilla.suse.com/show_bug.cgi?id=1266901

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2421-1
Release Date: 2026-06-16T14:36:07Z
Affected Products: * openSUSE Leap 15.5 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 * SUSE Linux Enterprise Live Patching 15-SP5 * SUSE Linux Enterprise Micro 5.5 * SUSE Linux Enterprise Real Time 15 SP5 * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server 15 SP5 LTSS * SUSE Linux Enterprise Server for SAP Applications 15 SP5

Topics%20covered

Topics Covered

security advisory security issue important kernel system update OpenSUSE

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