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.
History

Fri, 27 Feb 2026 03:30:00 +0000

Type Values Removed Values Added
First Time appeared Freedesktop
Freedesktop udisks
CPEs cpe:2.3:a:freedesktop:udisks:2.0.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
Vendors & Products Freedesktop
Freedesktop udisks

Wed, 25 Feb 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 25 Feb 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Wed, 25 Feb 2026 10:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Udisks: missing authorization check allows unprivileged users to restore luks headers via udisks d-bus api
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-862
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-02-25T10:31:50.913Z

Updated: 2026-02-25T21:03:12.865Z

Reserved: 2026-02-11T12:48:26.436Z

Link: CVE-2026-26103

cve-icon Vulnrichment

Updated: 2026-02-25T21:03:08.443Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-25T11:16:02.983

Modified: 2026-02-27T03:26:30.660

Link: CVE-2026-26103

cve-icon Redhat

Severity : Important

Publid Date: 2026-02-25T06:00:00Z

Links: CVE-2026-26103 - Bugzilla