RHEL 8 : kpatch-patch (RHSA-2022:5476)

high Nessus Plugin ID 162659

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Synopsis

The remote Red Hat host is missing one or more security updates for kpatch-patch.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:5476 advisory.

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.

Security Fix(es):

* kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root (CVE-2022-1966)

* kernel: buffer overflow in IPsec ESP transformation code (CVE-2022-27666)

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 package based on the guidance in RHSA-2022:5476.

Plugin Details

Severity: High

ID: 162659

File Name: redhat-RHSA-2022-5476.nasl

Version: 1.12

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 7/1/2022

Updated: 9/12/2025

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.5

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2022-32250

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_81_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_75_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_65_2, cpe:/o:redhat:rhel_eus:8.2, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_64_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_68_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_71_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_70_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_80_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_60_2, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-193_79_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: 7/1/2022

Vulnerability Publication Date: 3/23/2022

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2022-27666, CVE-2022-32250

CWE: 122, 416

RHSA: 2022:5476

Detections

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