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openSUSE Leap 15.6 Critical Kernel Security Update SUSE-SU-2026-1256-1

opensuse
Calendar Grey May 8, 2026
Dist Opensuse Esm H88
Install the crucial security update for openSUSE kernel addressing six significant vulnerabilities with important severity.
An update that solves six vulnerabilities can now be installed.

Description

This update for the SUSE Linux Enterprise kernel 6.4.0-150600.23.53 fixes

various security issues

The following security issues were fixed:

* CVE-2025-38375: virtio-net: ensure the received length does not exceed

allocated size (bsc#1258073).

* CVE-2025-39977: futex: Prevent use-after-free during requeue-PI

(bsc#1252048).

* CVE-2025-71066: net/sched: ets: Always remove class from active list before

deleting in ets_qdisc_change (bsc#1258005).

* CVE-2026-23004: dst: fix races in rt6_uncached_list_del() and

rt_del_uncached_list() (bsc#1258655).

* CVE-2026-23204: net/sched: cls_u32: use skb_header_pointer_careful()

(bsc#1259126).

* CVE-2026-31431: crypto: algif_aead - Revert to operating out-of-place

(bsc#1263689).

Topics%20covered

Topics Covered

security advisory buffer overflow memory corruption 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:

* openSUSE Leap 15.6

zypper in -t patch SUSE-2026-1771=1 SUSE-2026-1772=1

* SUSE Linux Enterprise Live Patching 15-SP6

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-1771=1 SUSE-SLE-

Module-Live-Patching-15-SP6-2026-1772=1

Package List

* openSUSE Leap 15.6 (ppc64le s390x x86_64)

* kernel-livepatch-6_4_0-150600_23_47-default-debuginfo-17-150600.2.1

* kernel-livepatch-6_4_0-150600_23_47-default-17-150600.2.1

* kernel-livepatch-6_4_0-150600_23_53-default-16-150600.2.1

* kernel-livepatch-SLE15-SP6_Update_10-debugsource-17-150600.2.1

* kernel-livepatch-6_4_0-150600_23_53-default-debuginfo-16-150600.2.1

* kernel-livepatch-SLE15-SP6_Update_12-debugsource-16-150600.2.1

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

* kernel-livepatch-6_4_0-150600_23_47-default-debuginfo-17-150600.2.1

* kernel-livepatch-6_4_0-150600_23_47-default-17-150600.2.1

* kernel-livepatch-6_4_0-150600_23_53-default-16-150600.2.1

* kernel-livepatch-SLE15-SP6_Update_10-debugsource-17-150600.2.1

* kernel-livepatch-6_4_0-150600_23_53-default-debuginfo-16-150600.2.1

* kernel-livepatch-SLE15-SP6_Update_12-debugsource-16-150600.2.1

References

* bsc#1252048

* bsc#1258005

* bsc#1258073

* bsc#1258655

* bsc#1259126

* bsc#1263689

## References:

* https://www.suse.com/security/cve/CVE-2025-38375.html

* https://www.suse.com/security/cve/CVE-2025-39977.html

* https://www.suse.com/security/cve/CVE-2025-71066.html

* https://www.suse.com/security/cve/CVE-2026-23004.html

* https://www.suse.com/security/cve/CVE-2026-23204.html

* https://www.suse.com/security/cve/CVE-2026-31431.html

* https://bugzilla.suse.com/show_bug.cgi?id=1252048

* https://bugzilla.suse.com/show_bug.cgi?id=1258005

* https://bugzilla.suse.com/show_bug.cgi?id=1258073

* https://bugzilla.suse.com/show_bug.cgi?id=1258655

* https://bugzilla.suse.com/show_bug.cgi?id=1259126

* https://bugzilla.suse.com/show_bug.cgi?id=1263689

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1771-1
Release Date: 2026-05-08T11:05:28Z
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 buffer overflow memory corruption important kernel OpenSUSE

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