RHEL 7 : kernel-rt (RHSA-2025:22914)

high Nessus Plugin ID 277934

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Synopsis

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

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:22914 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: use after free flaw in l2cap_conn_del in net/bluetooth/l2cap_core.c (CVE-2022-3640)

* kernel: sctp: linearize cloned gso packets in sctp_rcv (CVE-2025-38718)

* kernel: Bluetooth: L2CAP: Fix use-after-free (CVE-2023-53305)

* kernel: cifs: fix oops during encryption (CVE-2022-50341)

* kernel: ip6mr: Fix skb_under_panic in ip6mr_cache_report() (CVE-2023-53365)

* kernel: Bluetooth: L2CAP: Fix user-after-free (CVE-2022-50386)

* kernel: wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit() (CVE-2022-50408)

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-2025:22914.

Plugin Details

Severity: High

ID: 277934

File Name: redhat-RHSA-2025-22914.nasl

Version: 1.1

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 12/9/2025

Updated: 12/9/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 6.5

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

CVSS Score Source: CVE-2022-3640

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

Vector: CVSS:3.0/AV:A/AC:L/PR:N/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:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kernel-rt, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug, p-cpe:/a:redhat:enterprise_linux:kernel-rt-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-devel, p-cpe:/a:redhat:enterprise_linux:kernel-rt-doc, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace, p-cpe:/a:redhat:enterprise_linux:kernel-rt-trace-devel

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: 12/9/2025

Vulnerability Publication Date: 9/4/2021

Reference Information

CVE: CVE-2022-3640, CVE-2022-50341, CVE-2022-50386, CVE-2022-50408, CVE-2023-53305, CVE-2023-53365, CVE-2025-38718

CWE: 119, 124, 416, 664

RHSA: 2025:22914

Detections

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