RHEL 8 : kpatch-patch (RHSA-2023:4531)

high Nessus Plugin ID 179454

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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-2023:4531 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: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c (CVE-2022-42896)

* kernel: tcindex: use-after-free vulnerability in traffic control index filter allows privilege escalation (CVE-2023-1281)

* kernel: Use-after-free vulnerability in the Linux Kernel traffic control index filter (CVE-2023-1829)

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-2023:4531.

Plugin Details

Severity: High

ID: 179454

File Name: redhat-RHSA-2023-4531.nasl

Version: 1.4

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 8/8/2023

Updated: 3/6/2025

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: Important

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

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

CVSS Score Source: CVE-2022-42896

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-477_10_1, cpe:/o:redhat:rhel_eus:8.8, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-477_15_1, p-cpe:/a:redhat:enterprise_linux:kpatch-patch-4_18_0-477_13_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: 8/8/2023

Vulnerability Publication Date: 11/23/2022

Reference Information

CVE: CVE-2022-42896, CVE-2023-1281, CVE-2023-1829

CWE: 119, 416

RHSA: 2023:4531

Detections

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