Udisks: missing authorization check allows unprivileged users to restore luks headers via udisks d-bus api (Red Hat Red Hat Enterprise Linux 10)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.08 % · percentile 0 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-862 — Missing Authorization
References
- https://access.redhat.com/errata/RHSA-2026:3476
- https://access.redhat.com/errata/RHSA-2026:5831
- https://access.redhat.com/security/cve/CVE-2026-26103
- 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
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H | redhat |
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H | redhat-SADP |
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
European references
- ENISA EUVD · EUVD-2026-8634
- GCVE · GCVE-0-2026-26103
Affected configurations (NVD CPE)
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*cpe:2.3:a:freedesktop:udisks:2.0.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Red Hat · Red Hat Enterprise Linux 10 | unaffected 0:2.10.90-6.el10_1.1 < * |
| Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Support | unaffected 0:2.10.90-5.el10_0.2 < * |
| Red Hat · Red Hat Enterprise Linux 6 | |
| Red Hat · Red Hat Enterprise Linux 7 | |
| Red Hat · Red Hat Enterprise Linux 8 | |
| Red Hat · Red Hat Enterprise Linux 9 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |