High7.1Red Hat Linux

High [CVE-2026-26103] Missing Authorization Check Allows Unprivileged Users to Restore LUKS Headers via udisks D-Bus API

This high-severity Red Hat Linux advisory covers CVE-2026-26103 affecting Red Hat Enterprise Linux 10.0 Extended Update Support.

CVE-2026-26103 Published Feb 25, 2026

CVE-2026-26103

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Missing Authorization Check Allows Unprivileged Users to Restore LUKS Headers via udisks D-Bus API. Red Hat rates this important (CVSS 7.1).

Weakness: CWE-862. Affected package(s): udisks2.

Resolved in Red Hat advisory RHSA-2026:5831 — update the affected packages (`sudo dnf update`).

Affected product named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support.

Affected versions

udisks2-0:2.10.90-5.el10_0.2
udisks2-0:2.10.90-6.el10_1.1

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

RHSA-2026:5831

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:5831 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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