CVE-2026-26103
highA flaw was found in the udisks storage management daemon that exposes a privileged D-Bus API for restoring LUKS encryption headers without proper authorization…
Vendor / product: Redhat — enterprise linux
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://access.redhat.com/errata/RHSA-2026:3476 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:5831 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-26103 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2433719 secalert@redhat.com
- https://github.com/storaged-project/udisks/security/advisories/GHSA-c75h-phf8-ccjm secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:3476 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/errata/RHSA-2026:5831 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://access.redhat.com/security/cve/CVE-2026-26103 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://bugzilla.redhat.com/show_bug.cgi?id=2433719 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26103.json 0b0ca135-0b70-47e7-9f44-1890c2a1c46c