Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-3390)

critical Nessus Plugin ID 377923

Synopsis

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

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3390 advisory.

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

sctp: validate cookie AUTH state before use (CVE-2026-74752)

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

bpf: Reject MEM_ALLOC BTF accesses past object bounds (CVE-2026-93148)

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

smb: client: reject out-of-bounds DataOffset in CIFSSMBRead() (CVE-2026-97563)

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

bpf: Preserve inner map identity in callback frames (CVE-2026-98033)

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

smb: client: validate absolute native symlink targets before NT fixups (CVE-2026-98318)

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

bpf: Use array_map_meta_equal for percpu array inner map replacement (CVE-2026-98376)

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

KVM: SVM: Preserve TLB control (i.e. pending TLB flush) on failed VMRUN (CVE-2026-98715)

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

futex: Fix private hash use-after-free on resize (CVE-2026-98788)

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 2023.12.20261109' or or 'dnf update --advisory ALAS2023-2026-3390 --releasever 2023.12.20261109' to update your system.

Plugin Details

Severity: Critical

ID: 377923

File Name: al2023_ALAS2023-2026-3390.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 11/9/2026

Updated: 11/9/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.35

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-74752

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/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: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:bpftool6.18-debuginfo, p-cpe:/a:amazon:linux:bpftool6.18, p-cpe:/a:amazon:linux:kernel-livepatch-6.18.56-126.188, p-cpe:/a:amazon:linux:kernel6.18-debuginfo-common-aarch64, p-cpe:/a:amazon:linux:kernel6.18-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:kernel6.18-debuginfo, p-cpe:/a:amazon:linux:kernel6.18-devel, 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-modules-extra, p-cpe:/a:amazon:linux:kernel6.18-tools-debuginfo, p-cpe:/a:amazon:linux:kernel6.18-tools-devel, p-cpe:/a:amazon:linux:kernel6.18-tools, p-cpe:/a:amazon:linux:kernel6.18, p-cpe:/a:amazon:linux:microvm-kernel6.18, p-cpe:/a:amazon:linux:perf6.18-debuginfo, p-cpe:/a:amazon:linux:perf6.18, p-cpe:/a:amazon:linux:python3-perf6.18-debuginfo, p-cpe:/a:amazon:linux:python3-perf6.18

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/9/2026

Vulnerability Publication Date: 8/26/2026

Reference Information

CVE: CVE-2026-74752, CVE-2026-93148, CVE-2026-97563, CVE-2026-98033, CVE-2026-98318, CVE-2026-98376, CVE-2026-98715, CVE-2026-98788

Detections

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