RHEL 9 : kpatch-patch-5_14_0-687_10_1 and kpatch-patch-5_14_0-687_42_1 (RHSA-2026:81452)

high Nessus Plugin ID 369234

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Synopsis

The remote Red Hat host is missing one or more security updates for kpatch-patch-5_14_0-687_10_1 / kpatch- patch-5_14_0-687_42_1.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:81452 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-5.14.0-687.10.1.el9_8.

Security Fix(es):

* kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() (CVE-2026-46181)

* kernel: RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init() (CVE-2026-46176)

* kernel: io_uring/poll: fix signed comparison in io_poll_get_ownership() (CVE-2026-52933)

* kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() (CVE-2026-64002)

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_0-687_10_1 / kpatch-patch-5_14_0-687_42_1 packages based on the guidance in RHSA-2026:81452.

Plugin Details

Severity: High

ID: 369234

File Name: redhat-RHSA-2026-81452.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 10/21/2026

Updated: 10/21/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-64002

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, cpe:/o:redhat:rhel_eus:9.8, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-5_14_0-687_10_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-5_14_0-687_42_1

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/12/2026

Vulnerability Publication Date: 5/26/2026

Reference Information

CVE: CVE-2026-46176, CVE-2026-46181, CVE-2026-52933, CVE-2026-64002

CWE: 1024, 366, 825

RHSA: 2026:81452

Detections

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