CVE-2026-26104
CVE-2026-26104 · Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 5.5 · Medium · EPSS 0.1% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
red hat enterprise linux 10
- Versions
- ≥ 0:2.10.90-6.el10_1.1: Not affected (rpm)
No fix published
red hat enterprise linux 10.0 extended update support
- Versions
- ≥ 0:2.10.90-5.el10_0.2: Not affected (rpm)
No fix published
red hat enterprise linux 6
No fix published
red hat enterprise linux 7
No fix published
red hat enterprise linux 8
No fix published
red hat enterprise linux 9
No fix published
udisks2 Debian:14
- Versions
- 2.10.1-12.1
- 2.10.90-1
- 2.10.90-2
- 2.10.90-3
- 2.10.90-3.1
- 2.10.91-1
- 2.11.0-1
- 2.11.0-2
- Affected ranges
- ECOSYSTEM: < 2.11.1-1
Update to 2.11.1-1
Original sources
- 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
- https://bugzilla.redhat.com/show_bug.cgi?id=2433717
- https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw
- https://nvd.nist.gov/vuln/detail/CVE-2026-26104