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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — | — |
| 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 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | udisks2 | 2.11.1-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | udisks2 +5 | 2.10.90-6.el10_1.1 | RHSA-2026:3476 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | udisks2 +5 | 2.10.90-5.el10_0.2 | RHSA-2026:5831 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | udisks2 +5 | 2.10.90-6.el10_1.1.alma.1 | ALSA-2026:3476 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | udisks2 | 2.10.90-6.el10_1.1 | RLSA-2026:3476 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | udisks2 | 2.11.0-2.1 | openSUSE-SU-2026:10273-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | udisks2 +5 | 2.10.90-6.0.1.el10_1.1 | ELSA-2026-3476 |
Advisories 7
- ALSA-2026:3476 Important: udisks2 security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:5831 Red Hat Security Advisory: udisks2 security update Red Hat Security Advisories (RHSA) · Jul 12, 2026
- RHSA-2026:3476 Red Hat Security Advisory: udisks2 security update Red Hat Security Advisories (RHSA) · Jul 12, 2026
- WID-SEC-2026-0554 Red Hat Enterprise Linux (udisks): Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 25, 2026
- openSUSE-SU-2026:10273-1 libudisks2-0-2.11.0-2.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- RLSA-2026:3476 Important: udisks2 security update Rocky Linux Security Advisories · Mar 9, 2026
- ELSA-2026-3476 Important: udisks2 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Mar 2, 2026
References
- RHSA-2026:3476 vendor-advisory
- RHSA-2026:5831 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-26103 vdb-entry
- RHBZ#2433719 issue-tracking
- https://github.com/storaged-project/udisks/security/advisories/GHSA-c75h-phf8-ccjm