Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Enterprise Linux | 10.0 |
| Freedesktop | Udisks | 2.0.0 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:3476
- https://access.redhat.com/errata/RHSA-2026:5831
- https://access.redhat.com/security/cve/CVE-2026-26103Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2433719Issue TrackingVendor Advisory
- https://github.com/storaged-project/udisks/security/advisories/GHSA-c75h-phf8-cc
FAQ
What is CVE-2026-26103?
CVE-2026-26103 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 unprivi...
How severe is CVE-2026-26103?
CVE-2026-26103 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-26103?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Enterprise Linux, Freedesktop Udisks.