SUSE SLES15 Security Update : kernel RT (Live Patch 3 for SUSE Linux Enterprise 15 SP7) (SUSE-SU-2026:1686-1)

high Nessus Plugin ID 312340

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1686-1 advisory.

This update for the SUSE Linux Enterprise kernel 6.4.0-150700.7.13 fixes various security issues

The following security issues were fixed:

- 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).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel-livepatch-6_4_0-150700_7_13-rt package.

Plugin Details

Severity: High

ID: 312340

File Name: suse_SU-2026-1686-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 5/6/2026

Updated: 5/6/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.4

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 5.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:N/A:C

CVSS Score Source: CVE-2026-23204

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:kernel-livepatch-6_4_0-150700_7_13-rt

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/5/2026

Vulnerability Publication Date: 6/10/2025

CISA Known Exploited Vulnerability Due Dates: 5/15/2026

Reference Information

CVE: CVE-2025-39977, CVE-2025-71066, CVE-2026-23004, CVE-2026-23204, CVE-2026-31431

SuSE: SUSE-SU-2026:1686-1

Detections

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