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Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1817)

high Nessus Plugin ID 319886

Synopsis

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

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1817 advisory.

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

 i40e: remove read access to debugfs files (CVE-2025-39901)

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

 exfat: validate cluster allocation bits of the allocation bitmap (CVE-2025-40307)

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

 can: raw: fix ro->uniq use-after-free in raw_rcv() (CVE-2026-31532)

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

 HID: core: clamp report_size in s32ton() to avoid undefined shift (CVE-2026-31624)

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

 fuse: reject oversized dirents in page cache (CVE-2026-31694)

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

 ipv4: icmp: fix null-ptr-deref in icmp_build_probe() (CVE-2026-43099)

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 2023.12.20260608' or or 'dnf update --advisory ALAS2023-2026-1817 --releasever 2023.12.20260608' to update your system.

See Also

https://alas.aws.amazon.com//AL2023/ALAS2023-2026-1817.html

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

https://explore.alas.aws.amazon.com/CVE-2025-39901.html

https://explore.alas.aws.amazon.com/CVE-2025-40307.html

https://explore.alas.aws.amazon.com/CVE-2026-31532.html

https://explore.alas.aws.amazon.com/CVE-2026-31624.html

https://explore.alas.aws.amazon.com/CVE-2026-31694.html

https://explore.alas.aws.amazon.com/CVE-2026-43099.html

Plugin Details

Severity: High

ID: 319886

File Name: al2023_ALAS2023-2026-1817.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/8/2026

Updated: 6/8/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

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-2026-31532

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:amazon:linux:kernel-modules-extra-common, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:kernel-modules-extra, p-cpe:/a:amazon:linux:kernel-debuginfo-common-aarch64, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:python3-perf, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:bpftool-debuginfo, p-cpe:/a:amazon:linux:kernel-livepatch-6.1.174-217.345, p-cpe:/a:amazon:linux:kernel-headers, p-cpe:/a:amazon:linux:kernel-tools-devel, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:bpftool, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:python3-perf-debuginfo, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/8/2026

Vulnerability Publication Date: 10/1/2025

Reference Information

CVE: CVE-2025-39901, CVE-2025-40307, CVE-2026-31532, CVE-2026-31624, CVE-2026-31694, CVE-2026-43099