Detections
Analytics

Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-2001)

high Nessus Plugin ID 329375

Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-2001 advisory.

 In the Linux kernel, the following vulnerability has been resolved:

 netfilter: nfnetlink_queue: do shared-unconfirmed check before segmentation (CVE-2026-45859)

 In the Linux kernel, the following vulnerability has been resolved:

 netfilter: nf_tables: use list_del_rcu for netlink hooks (CVE-2026-46324)

 In the Linux kernel, the following vulnerability has been resolved:

 bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops (CVE-2026-53078)

 In the Linux kernel, the following vulnerability has been resolved:

 KVM: x86: Fix shadow paging use-after-free due to unexpected role (CVE-2026-53359)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'dnf update kernel --releasever 2023.12.20260724' or or 'dnf update --advisory ALAS2023-2026-2001 --releasever 2023.12.20260724' to update your system.

See Also

https://alas.aws.amazon.com//AL2023/ALAS2023-2026-2001.html

https://alas.aws.amazon.com/faqs.html

https://explore.alas.aws.amazon.com/CVE-2026-45859.html

https://explore.alas.aws.amazon.com/CVE-2026-46324.html

https://explore.alas.aws.amazon.com/CVE-2026-53078.html

https://explore.alas.aws.amazon.com/CVE-2026-53359.html

Plugin Details

Severity: High

ID: 329375

File Name: al2023_ALAS2023-2026-2001.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/25/2026

Updated: 7/25/2026

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

Risk Information

VPR

Risk Factor: Critical

Score: 9

Percentile: 99.75

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-53359

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:bpftool-debuginfo, p-cpe:/a:amazon:linux:bpftool, p-cpe:/a:amazon:linux:kernel-debuginfo-common-aarch64, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:kernel-headers, p-cpe:/a:amazon:linux:kernel-livepatch-6.1.176-221.367, p-cpe:/a:amazon:linux:kernel-modules-extra-common, p-cpe:/a:amazon:linux:kernel-modules-extra, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:python3-perf-debuginfo, p-cpe:/a:amazon:linux:python3-perf

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/24/2026

Vulnerability Publication Date: 3/27/2026

Reference Information

CVE: CVE-2026-45859, CVE-2026-46324, CVE-2026-53078, CVE-2026-53359