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Linux Distros Unpatched Vulnerability : CVE-2026-26103

medium Nessus Plugin ID 300046

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - A flaw was found in the udisks storage management daemon that exposes a privileged D-Bus API for restoring LUKS encryption headers without proper authorization checks. The issue allows a local unprivileged user to instruct the root-owned udisks daemon to overwrite encryption metadata on block devices. This can permanently invalidate encryption keys and render encrypted volumes inaccessible. Successful exploitation results in a denial-of-service condition through irreversible data loss. (CVE-2026-26103)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-26103

https://security-tracker.debian.org/tracker/CVE-2026-26103

Plugin Details

Severity: Medium

ID: 300046

File Name: unpatched_CVE_2026_26103.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 2/26/2026

Updated: 2/26/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 4.2

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

CVSS Score Source: CVE-2026-26103

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:udisks2-iscsi, p-cpe:/a:redhat:enterprise_linux:udisks2-lsm, p-cpe:/a:debian:debian_linux:udisks2, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:redhat:enterprise_linux:udisks2, p-cpe:/a:redhat:enterprise_linux:udisks2-lvm2, p-cpe:/a:redhat:enterprise_linux:libudisks2, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:redhat:enterprise_linux:libudisks2-devel

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 2/25/2026

Reference Information

CVE: CVE-2026-26103