RHEL 9 : kpatch-patch-5_14_0-570_116_1, kpatch-patch-5_14_0-570_17_1, kpatch-patch-5_14_0-570_39_1, kpatch-patch-5_14_0-570_66_1, and kpatch-patch-5_14_0-570_94_1 (RHSA-2026:62641)

high Nessus Plugin ID 342458

Synopsis

The remote Red Hat host is missing one or more security updates for kpatch-patch-5_14_0-570_116_1 / kpatch- patch-5_14_0-570_17_1 / kpatch-patch-5_14_0-570_39_1 / kpatch-patch-5_14_0-570_66_1 / kpatch-patch-5_14_0-570_94_1.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:62641 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-5.14.0-570.17.1.el9_6.

Security Fix(es):

* kernel: Kernel: Privilege escalation or denial of service in nf_tables via inverted element activity check (CVE-2026-23111)

* kernel: netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry (CVE-2026-43114)

* kernel: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath (CVE-2026-43112)

* kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs (CVE-2026-46323)

* kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle (CVE-2026-53264)

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-5_14_0-570_116_1 / kpatch-patch-5_14_0-570_17_1 / kpatch-patch-5_14_0-570_39_1 / kpatch- patch-5_14_0-570_66_1 / kpatch-patch-5_14_0-570_94_1 packages based on the guidance in RHSA-2026:62641.

Plugin Details

Severity: High

ID: 342458

File Name: redhat-RHSA-2026-62641.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 9/2/2026

Updated: 9/2/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.9

Percentile: 99.36

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-23111

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:rhel_eus:9.6, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-5_14_0-570_116_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-5_14_0-570_17_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-5_14_0-570_39_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-5_14_0-570_66_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-5_14_0-570_94_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: 9/2/2026

Vulnerability Publication Date: 2/13/2026

Reference Information

CVE: CVE-2026-23111, CVE-2026-43112, CVE-2026-43114, CVE-2026-46323, CVE-2026-53264

CWE: 123, 125, 364, 480, 672

RHSA: 2026:62641

Detections

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