RHEL 8 : kpatch-patch-4_18_0-553_109_1, kpatch-patch-4_18_0-553_125_1, kpatch-patch-4_18_0-553_53_1, kpatch-patch-4_18_0-553_72_1, and kpatch-patch-4_18_0-553_85_1 (RHSA-2026:59146)

high Nessus Plugin ID 339180

Synopsis

The remote Red Hat host is missing one or more security updates for kpatch-patch-4_18_0-553_109_1 / kpatch- patch-4_18_0-553_125_1 / kpatch-patch-4_18_0-553_53_1 / kpatch-patch-4_18_0-553_72_1 / kpatch-patch-4_18_0-553_85_1.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:59146 advisory.

This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel. This patch module is targeted for kernel-4.18.0-553.53.1.el8_10.

Security Fix(es):

* kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499)

* kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984)

* kernel: xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete (CVE-2026-46116)

* kernel: sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL (CVE-2026-46227)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 RHEL kpatch-patch-4_18_0-553_109_1 / kpatch-patch-4_18_0-553_125_1 / kpatch-patch-4_18_0-553_53_1 / kpatch- patch-4_18_0-553_72_1 / kpatch-patch-4_18_0-553_85_1 packages based on the guidance in RHSA-2026:59146.

Plugin Details

Severity: High

ID: 339180

File Name: redhat-RHSA-2026-59146.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 8/25/2026

Updated: 8/25/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.4

Percentile: 99.81

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

CVSS Score Source: CVE-2026-46227

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

CVSS Score Source: CVE-2026-45984

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:rhel_eus:8.10, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-553_109_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-553_125_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-553_53_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-553_72_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-553_85_1

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/24/2026

Vulnerability Publication Date: 4/1/2026

Reference Information

CVE: CVE-2026-43499, CVE-2026-45984, CVE-2026-46116, CVE-2026-46227

CWE: 367, 763, 825, 826

RHSA: 2026:59146

Detections

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