RHEL 8 : kpatch-patch-4_18_0-372_137_1, kpatch-patch-4_18_0-372_145_1, kpatch-patch-4_18_0-372_158_1, kpatch-patch-4_18_0-372_170_1, and kpatch-patch-4_18_0-372_181_1 (RHSA-2026:16111)

high Nessus Plugin ID 314252

Synopsis

The remote Red Hat host is missing a security update for kpatch-patch-4_18_0-372_137_1 / kpatch-patch-4_18_0-372_145_1 / kpatch-patch-4_18_0-372_158_1 / kpatch-patch-4_18_0-372_170_1 / kpatch-patch-4_18_0-372_181_1.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:16111 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-4.18.0-372.137.1.el8_6.

Security Fix(es):

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

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 this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL kpatch-patch-4_18_0-372_137_1 / kpatch-patch-4_18_0-372_145_1 / kpatch-patch-4_18_0-372_158_1 / kpatch- patch-4_18_0-372_170_1 / kpatch-patch-4_18_0-372_181_1 packages based on the guidance in RHSA-2026:16111.

Plugin Details

Severity: High

ID: 314252

File Name: redhat-RHSA-2026-16111.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 5/11/2026

Updated: 5/12/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.4

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-2026-31431

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 v4

Risk Factor: High

Base Score: 8.6

Threat Score: 8.6

Threat Vector: CVSS:4.0/E:A

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-372_137_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-372_158_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-372_170_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-372_181_1, cpe:/o:redhat:rhel_e4s:8.6, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-372_145_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: 5/11/2026

Vulnerability Publication Date: 4/22/2026

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

Exploitable With

Core Impact

Metasploit (Copy Fail AF_ALG + authencesn Page-Cache Write)

Reference Information

CVE: CVE-2026-31431

CWE: 1288

IAVA: 2026-A-0428

RHSA: 2026:16111

Detections

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