Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1514)

high Nessus Plugin ID 304298

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Synopsis

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

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1514 advisory.

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

btrfs: fix reservation leak in some error paths when inserting inline extent (CVE-2025-71268)

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

RDMA/umad: Reject negative data_len in ib_umad_write (CVE-2026-23243)

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

net: gro: fix outer network offset (CVE-2026-23254)

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

net: add proper RCU protection to /proc/net/ptype (CVE-2026-23255)

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

io_uring/rw: free potentially allocated iovec on cache put failure (CVE-2026-23259)

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

regmap: maple: free entry on mas_store_gfp() failure (CVE-2026-23260)

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 kernel6.18 --releasever 2023.10.20260325' or or 'dnf update --advisory ALAS2023-2026-1514 --releasever 2023.10.20260325' to update your system.

Plugin Details

Severity: High

ID: 304298

File Name: al2023_ALAS2023-2026-1514.nasl

Version: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 3/30/2026

Updated: 3/30/2026

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 4.9

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

CVSS Score Source: CVE-2026-23243

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:kernel6.18-libbpf, p-cpe:/a:amazon:linux:kernel6.18-headers, p-cpe:/a:amazon:linux:kernel6.18-modules-extra-common, p-cpe:/a:amazon:linux:kernel6.18-tools-devel, p-cpe:/a:amazon:linux:bpftool6.18-debuginfo, p-cpe:/a:amazon:linux:kernel6.18-debuginfo-common-aarch64, p-cpe:/a:amazon:linux:python3-perf6.18-debuginfo, p-cpe:/a:amazon:linux:kernel6.18, p-cpe:/a:amazon:linux:kernel6.18-tools-debuginfo, p-cpe:/a:amazon:linux:perf6.18, p-cpe:/a:amazon:linux:perf6.18-debuginfo, p-cpe:/a:amazon:linux:kernel-livepatch-6.18.15-14.217, p-cpe:/a:amazon:linux:kernel6.18-modules-extra, p-cpe:/a:amazon:linux:kernel6.18-tools, p-cpe:/a:amazon:linux:kernel6.18-libbpf-static, p-cpe:/a:amazon:linux:kernel6.18-devel, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:kernel6.18-debuginfo, p-cpe:/a:amazon:linux:kernel6.18-libbpf-debuginfo, p-cpe:/a:amazon:linux:bpftool6.18, p-cpe:/a:amazon:linux:kernel6.18-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:python3-perf6.18, p-cpe:/a:amazon:linux:kernel6.18-libbpf-devel

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/27/2026

Vulnerability Publication Date: 3/18/2026

Reference Information

CVE: CVE-2025-71268, CVE-2026-23243, CVE-2026-23254, CVE-2026-23255, CVE-2026-23259, CVE-2026-23260

Detections

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