Amazon Linux 2023 : dracut, dracut-caps, dracut-config-generic (ALAS2023-2026-1965)

high Nessus Plugin ID 328481

Synopsis

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

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1965 advisory.

A flaw was found in dracut. A remote attacker on the adjacent network can exploit this vulnerability by providing specially crafted DHCP (Dynamic Host Configuration Protocol) options, such as a malicious hostname, to a system using dracut's legacy DHCP path. These options are improperly handled and written into temporary shell scripts without proper escaping, leading to command injection. This allows the attacker to achieve root code execution within the initramfs, potentially compromising the system's boot and network behavior. (CVE-2026-6893)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'dnf update dracut --releasever 2023.12.20260720' or or 'dnf update --advisory ALAS2023-2026-1965 --releasever 2023.12.20260720' to update your system.

Plugin Details

Severity: High

ID: 328481

File Name: al2023_ALAS2023-2026-1965.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 7/20/2026

Updated: 7/20/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.04

CVSS v2

Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-6893

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:A/AC:H/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:dracut-caps, p-cpe:/a:amazon:linux:dracut-config-generic, p-cpe:/a:amazon:linux:dracut-config-rescue, p-cpe:/a:amazon:linux:dracut-debuginfo, p-cpe:/a:amazon:linux:dracut-debugsource, p-cpe:/a:amazon:linux:dracut-squash, p-cpe:/a:amazon:linux:dracut-tools, p-cpe:/a:amazon:linux:dracut

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/20/2026

Vulnerability Publication Date: 6/10/2026

Reference Information

CVE: CVE-2026-6893

Detections

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