CVE-2026-26103
Udisks: missing authorization check allows unprivileged users to restore luks headers via udisks d-bus api
Vexday Risk Score
21Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 7.1EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
25 Feb 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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
Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9References
https://access.redhat.com/errata/RHSA-2026:3476https://access.redhat.com/errata/RHSA-2026:5831https://access.redhat.com/security/cve/CVE-2026-26103https://bugzilla.redhat.com/show_bug.cgi?id=2433719https://github.com/storaged-project/udisks/security/advisories/GHSA-c75h-phf8-ccjmhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26103.json