CVE-2026-26104

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:3476
https://access.redhat.com/errata/RHSA-2026:5831
https://access.redhat.com/security/cve/CVE-2026-26104	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2433717	Issue Tracking Vendor Advisory
https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw

Configurations

Configuration 1 (hide)

cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:a:freedesktop:udisks:2.0.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-25 11:16

Updated : 2026-03-25 19:16

NVD link : CVE-2026-26104

Mitre link : CVE-2026-26104

CVE.ORG link : CVE-2026-26104

JSON object : View

Products Affected

freedesktop

udisks

redhat

enterprise_linux

CWE

CWE-862

Missing Authorization

{"id": "CVE-2026-26104", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "secalert@redhat.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2026-02-25T11:16:03.193", "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:3476", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:5831", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-26104", "tags": ["Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433717", "tags": ["Issue Tracking", "Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw", "source": "secalert@redhat.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-862"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Se encontr\u00f3 una falla en el demonio de gesti\u00f3n de almacenamiento udisks que permite a usuarios sin privilegios hacer una copia de seguridad de los encabezados de cifrado LUKS sin autorizaci\u00f3n. El problema ocurre porque un m\u00e9todo D-Bus privilegiado responsable de exportar metadatos de cifrado no realiza una verificaci\u00f3n de pol\u00edtica. Como resultado, los metadatos criptogr\u00e1ficos sensibles pueden ser le\u00eddos y escritos en ubicaciones controladas por el atacante. Esto debilita las garant\u00edas de confidencialidad de los vol\u00famenes de almacenamiento cifrados."}], "lastModified": "2026-03-25T19:16:48.227", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:freedesktop:udisks:2.0.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D31F1F1D-2E26-4D8E-A8C0-5395F302C444"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}