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openSUSE Leap 15.5 Security Update SUSE-SU-2026-1804-1 Kernel Threats

opensuse
Calendar Grey May 11, 2026
Dist Opensuse Esm H88
An important update for openSUSE fixing six vulnerabilities in the kernel. Ensure your systems are protected and patched.
An update that solves six vulnerabilities can now be installed.

Description

This update for the SUSE Linux Enterprise kernel 5.14.21-150500.55.130 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 important kernel OpenSUSE use-after-free

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-2026-1804=1 SUSE-2026-1805=1 SUSE-2026-1806=1

* SUSE Linux Enterprise Live Patching 15-SP5

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2026-1804=1 SUSE-SLE-

Module-Live-Patching-15-SP5-2026-1805=1 SUSE-SLE-Module-Live-

Patching-15-SP5-2026-1806=1

Package List

* openSUSE Leap 15.5 (ppc64le s390x x86_64)

* kernel-livepatch-5_14_21-150500_55_130-default-debuginfo-6-150500.2.1

* kernel-livepatch-SLE15-SP5_Update_33-debugsource-6-150500.2.1

* kernel-livepatch-5_14_21-150500_55_124-default-debuginfo-9-150500.2.1

* kernel-livepatch-SLE15-SP5_Update_31-debugsource-9-150500.2.1

* kernel-livepatch-5_14_21-150500_55_124-default-9-150500.2.1

* kernel-livepatch-SLE15-SP5_Update_28-debugsource-16-150500.2.1

* kernel-livepatch-5_14_21-150500_55_113-default-debuginfo-16-150500.2.1

* kernel-livepatch-5_14_21-150500_55_130-default-6-150500.2.1

* kernel-livepatch-5_14_21-150500_55_113-default-16-150500.2.1

* SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)

* kernel-livepatch-5_14_21-150500_55_130-default-debuginfo-6-150500.2.1

* kernel-livepatch-SLE15-SP5_Update_33-debugsource-6-150500.2.1

* kernel-livepatch-5_14_21-150500_55_124-default-debuginfo-9-150500.2.1

* kernel-livepatch-SLE15-SP5_Update_31-debugsource-9-150500.2.1

*...

Read the Full Advisory

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-2026:1804-1
Release Date: 2026-05-09T16:04:42Z
Affected Products: * openSUSE Leap 15.5 * SUSE Linux Enterprise High Performance Computing 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 for SAP Applications 15 SP5

Topics%20covered

Topics Covered

security advisory buffer overflow important kernel OpenSUSE use-after-free

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