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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat Red Hat Enterprise Linux 10
Default version status: affected
0:2.10.90-6.el10_1.1 to < *unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
Default version status: affected
0:2.10.90-5.el10_0.2 to < *unaffected
Red Hat Red Hat Enterprise Linux 6
Default version status: unaffected
Red Hat Red Hat Enterprise Linux 7
Default version status: unaffected
Red Hat Red Hat Enterprise Linux 8
Default version status: unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: unaffected
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 ↗