CVE-2026-26103
CVE-2026-26103 · Udisks: missing authorization check allows unprivileged users to restore 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 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 7.1 · High · 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-2026-26103
- https://bugzilla.redhat.com/show_bug.cgi?id=2433719
- https://github.com/storaged-project/udisks/security/advisories/GHSA-c75h-phf8-ccjm
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26103.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-26103