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SUSE SLES15 Security Update : kernel RT (Live Patch 3 for SUSE Linux Enterprise 15 SP7) (SUSE-SU-2026:0490-1)

medium Nessus Plugin ID 299046

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-2026:0490-1 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-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249480).
 - CVE-2025-40129: sunrpc: fix null pointer dereference on zero-length checksum (bsc#1253473).
 - CVE-2025-40186: tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request() (bsc#1253439).

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.

See Also

https://bugzilla.suse.com/1249480

https://bugzilla.suse.com/1253439

https://bugzilla.suse.com/1253473

http://www.nessus.org/u?fe35be1c

https://www.suse.com/security/cve/CVE-2025-39742

https://www.suse.com/security/cve/CVE-2025-40129

https://www.suse.com/security/cve/CVE-2025-40186

Plugin Details

Severity: Medium

ID: 299046

File Name: suse_SU-2026-0490-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2/14/2026

Updated: 2/14/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2025-39742

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/13/2026

Vulnerability Publication Date: 9/11/2025

Reference Information

CVE: CVE-2025-39742, CVE-2025-40129, CVE-2025-40186

SuSE: SUSE-SU-2026:0490-1