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Fedora 36 : kernel / kernel-headers / kernel-tools (2023-3fd7349f60)

high Nessus Plugin ID 170054

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Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 36 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2023-3fd7349f60 advisory.

 - A use-after-free vulnerability was found in __nfs42_ssc_open() in fs/nfs/nfs4file.c in the Linux kernel.
 This flaw allows an attacker to conduct a remote denial (CVE-2022-4379)

 - A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks.
 L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM (L0) advertising eIBRS support to L1. An attacker at L2 with code execution can execute code on an indirect branch on the host machine. We recommend upgrading to Kernel 6.2 or past commit 2e7eab81425a (CVE-2022-2196)

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 affected kernel, kernel-headers and / or kernel-tools packages.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2023-3fd7349f60

Plugin Details

Severity: High

ID: 170054

File Name: fedora_2023-3fd7349f60.nasl

Version: 1.1

Type: local

Agent: unix

Published: 1/15/2023

Updated: 4/29/2024

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

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-2022-2196

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:kernel, cpe:/o:fedoraproject:fedora:36, p-cpe:/a:fedoraproject:fedora:kernel-tools, p-cpe:/a:fedoraproject:fedora:kernel-headers

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/12/2023

Vulnerability Publication Date: 1/9/2023

Reference Information

CVE: CVE-2022-2196, CVE-2022-4379