RHEL 9 : dracut (RHSA-2026:26533)

high Nessus Plugin ID 321353

Synopsis

The remote Red Hat host is missing a security update for dracut.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:26533 advisory.

The dracut packages contain an event-driven initial RAM file system (initramfs) generator infrastructure based on the udev device manager. The virtual file system, initramfs, is loaded together with the kernel at boot time and initializes the system, so it can read and boot from the root partition.

Security Fix(es):

* dracut: dracut: Root code execution via DHCP options command injection (CVE-2026-6893)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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

Update the RHEL dracut package based on the guidance in RHSA-2026:26533.

Plugin Details

Severity: High

ID: 321353

File Name: redhat-RHSA-2026-26533.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 6/17/2026

Updated: 6/17/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:A/AC:H/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: p-cpe:/a:redhat:enterprise_linux:dracut-squash, p-cpe:/a:redhat:enterprise_linux:dracut-caps, p-cpe:/a:redhat:enterprise_linux:dracut-config-rescue, p-cpe:/a:redhat:enterprise_linux:dracut-live, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:dracut-config-generic, p-cpe:/a:redhat:enterprise_linux:dracut-network, p-cpe:/a:redhat:enterprise_linux:dracut, p-cpe:/a:redhat:enterprise_linux:dracut-tools, cpe:/o:redhat:rhel_eus:9.8

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/17/2026

Vulnerability Publication Date: 6/10/2026

Reference Information

CVE: CVE-2026-6893

CWE: 78

RHSA: 2026:26533

Detections

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