RHEL 9 : kernel-rt (RHSA-2026:1495)

high Nessus Plugin ID 297060

Synopsis

The remote Red Hat host is missing one or more security updates for kernel-rt.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:1495 advisory.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: mac80211: fix potential double free on mesh join (CVE-2022-49290)

* kernel: net: bonding: fix use-after-free after 802.3ad slave unbind (CVE-2022-49667)

* kernel: Linux kernel: be2net buffer overflow in be_get_module_eeprom (CVE-2022-49581)

* kernel: ntb_hw_switchtec: Fix shift-out-of-bounds in switchtec_ntb_mw_set_trans (CVE-2023-53034)

* kernel: net: openvswitch: fix nested key length validation in the set() action (CVE-2025-37789)

* kernel: KVM: arm64: Tear down vGIC on failed vCPU creation (CVE-2025-37849)

* kernel: smb: client: Fix use-after-free in cifs_fill_dirent (CVE-2025-38051)

* kernel: RDMA/rxe: Fix incomplete state save in rxe_requester (CVE-2023-53539)

* kernel: i40e: fix idx validation in config queues msg (CVE-2025-39971)

* kernel: ASoC: Intel: bytcr_rt5640: Fix invalid quirk input mapping (CVE-2025-40154)

* kernel: Linux kernel: vsock vulnerability may lead to memory corruption (CVE-2025-40248)

* kernel: mptcp: fix race condition in mptcp_schedule_work() (CVE-2025-40258)

* kernel: drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE (CVE-2025-40277)

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 kernel-rt package based on the guidance in RHSA-2026:1495.

Plugin Details

Severity: High

ID: 297060

File Name: redhat-RHSA-2026-1495.nasl

Version: 1.1

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 1/28/2026

Updated: 1/28/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

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-2025-37849

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: p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, cpe:/o:redhat:rhel_e4s:9.0, p-cpe:/a:redhat:enterprise_linux:kernel-rt-core, p-cpe:/a:redhat:enterprise_linux:kernel-rt-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-modules-extra, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-kvm, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-modules

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: 1/28/2026

Vulnerability Publication Date: 7/21/2022

Reference Information

CVE: CVE-2022-49290, CVE-2022-49581, CVE-2022-49667, CVE-2023-53034, CVE-2023-53539, CVE-2025-37789, CVE-2025-37849, CVE-2025-38051, CVE-2025-39971, CVE-2025-40154, CVE-2025-40248, CVE-2025-40258, CVE-2025-40277

CWE: 125, 190, 20, 362, 364, 415, 416, 459, 787, 805, 825

RHSA: 2026:1495

Detections

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