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openSUSE 15.6 Kernel Important Security Update 2026-1274-1 Fixes Issues

opensuse
Calendar Grey April 13, 2026
Dist Opensuse Esm H88
An important security patch for openSUSE 15.6 Kernel addresses several vulnerabilities. Immediate installation is advised.
An update that solves five vulnerabilities and has two security fixes can now be installed.

Description

This update for the SUSE Linux Enterprise Kernel 6.4.0-150600.23.84 fixes

various security issues

The following security issues were fixed:

* CVE-2025-71120: SUNRPC: svcauth_gss: avoid NULL deref on zero length

gss_token in gss_read_proxy_verf (bsc#1256780).

* CVE-2026-22999: net/sched: sch_qfq: do not free existing class in

qfq_change_class() (bsc#1257238).

* CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc

(bsc#1258051).

* CVE-2026-23111: netfilter: nf_tables: fix inverted genmask check in

nft_map_catchall_activate() (bsc#1258183).

* CVE-2026-23209: macvlan: fix error recovery in macvlan_common_newlink()

(bsc#1258784).

The following non security issue was fixed:

* Fix NULL pointer dereference in smb2_query_server_interfaces Livepatch for

to restore a null check of server->ops->query_server_interfaces that was

dropped by mistake. (bsc#1259896 bsc#1259962).

Topics%20covered

Topics Covered

security advisory security fix important kernel important fix 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 15.6

zypper in -t patch SUSE-2026-1274=1

* SUSE Linux Enterprise Live Patching 15-SP6

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-1274=1

Package List

* openSUSE Leap 15.6 (ppc64le s390x x86_64)

* kernel-livepatch-6_4_0-150600_23_84-default-debuginfo-3-150600.2.1

* kernel-livepatch-6_4_0-150600_23_84-default-3-150600.2.1

* kernel-livepatch-SLE15-SP6_Update_19-debugsource-3-150600.2.1

* SUSE Linux Enterprise Live Patching 15-SP6 (ppc64le s390x x86_64)

* kernel-livepatch-6_4_0-150600_23_84-default-debuginfo-3-150600.2.1

* kernel-livepatch-6_4_0-150600_23_84-default-3-150600.2.1

* kernel-livepatch-SLE15-SP6_Update_19-debugsource-3-150600.2.1

References

* bsc#1256780

* bsc#1257238

* bsc#1258051

* bsc#1258183

* bsc#1258784

* bsc#1259896

* bsc#1259962

## References:

* https://www.suse.com/security/cve/CVE-2025-71120.html

* https://www.suse.com/security/cve/CVE-2026-22999.html

* https://www.suse.com/security/cve/CVE-2026-23074.html

* https://www.suse.com/security/cve/CVE-2026-23111.html

* https://www.suse.com/security/cve/CVE-2026-23209.html

* https://bugzilla.suse.com/show_bug.cgi?id=1256780

* https://bugzilla.suse.com/show_bug.cgi?id=1257238

* https://bugzilla.suse.com/show_bug.cgi?id=1258051

* https://bugzilla.suse.com/show_bug.cgi?id=1258183

* https://bugzilla.suse.com/show_bug.cgi?id=1258784

* https://bugzilla.suse.com/show_bug.cgi?id=1259896

* https://bugzilla.suse.com/show_bug.cgi?id=1259962

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1274-1
Release Date: 2026-04-11T20:04:33Z
Affected Products: * openSUSE Leap 15.6 * SUSE Linux Enterprise Live Patching 15-SP6 * SUSE Linux Enterprise Real Time 15 SP6 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP6

Topics%20covered

Topics Covered

security advisory security fix important kernel important fix OpenSUSE

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