Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-3389)

critical Nessus Plugin ID 377932

Synopsis

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

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3389 advisory.

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

vhost: fix vhost_get_avail_idx for a non empty ring (CVE-2026-74356)

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:

smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2() (CVE-2026-89633)

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

NFSD: Prevent client use-after-free during delegation revoke (CVE-2026-89659)

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

NFSD: Prevent client use-after-free during blocked-lock reaping (CVE-2026-90036)

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: fix create context out-of-bounds reads (CVE-2026-98454)

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:

tipc: prevent GCM nonce reuse on peer key changes (CVE-2026-98805)

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

sctp: check RCV_SHUTDOWN after the sendmsg connect wait (CVE-2026-98846)

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

ipvs: bound LBLCR and LBLC cache growth (CVE-2026-98857)

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

tipc: hold a reference to nodes found by link name (CVE-2026-99053)

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

KVM: x86: Use active memslots for the per-vCPU MMIO cache (CVE-2026-99082)

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 2023.12.20261109' or or 'dnf update --advisory ALAS2023-2026-3389 --releasever 2023.12.20261109' to update your system.

Plugin Details

Severity: Critical

ID: 377932

File Name: al2023_ALAS2023-2026-3389.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: 6.3

Percentile: 96.09

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-90036

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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: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-6.1.190-237.431, 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:microvm-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: 11/9/2026

Vulnerability Publication Date: 8/15/2026

Reference Information

CVE: CVE-2026-74356, CVE-2026-74752, CVE-2026-89633, CVE-2026-89659, CVE-2026-90036, CVE-2026-97563, CVE-2026-98033, CVE-2026-98454, CVE-2026-98715, CVE-2026-98805, CVE-2026-98846, CVE-2026-98857, CVE-2026-99053, CVE-2026-99082

Detections

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