CVE-2026-26103
Udisks: missing authorization check allows unprivileged users to restore luks headers via udisks d-bus api
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
1th
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.
| CWE | CWE-862 |
| Vendor | red hat |
| Product | red hat enterprise linux 10 |
| Published | Feb 25, 2026 |
| Last Updated | Mar 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3476 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:5831 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-26103 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2433719 github.com: https://github.com/storaged-project/udisks/security/advisories/GHSA-c75h-phf8-ccjm
Credits
Red Hat would like to thank Asim Viladi Oglu Manizada for reporting this issue.