CVE-2026-26104 MEDIUM

CVE-2026-26104: Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-862 · Missing authorization
Published February 25, 2026
Last update March 25, 2026

CVSS base score

5.5/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

A flaw was found in the udisks storage management daemon that allows unprivileged users to back up LUKS encryption headers without authorization. The issue occurs because a privileged D-Bus method responsible for exporting encryption metadata does not perform a policy check. As a result, sensitive cryptographic metadata can be read and written to attacker-controlled locations. This weakens the confidentiality guarantees of encrypted storage volumes.

Key dates

02Disclosure timeline

February 25, 2026 CVE published
March 25, 2026 Record updated