CVE-2026-26104
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk0th percentile - higher than 0% of all known CVEs
Summary
A flaw in the udisks daemon allows unprivileged users to back up LUKS encryption headers without authorization. The privileged D-Bus method that exports encryption metadata does not perform a policy check.
Risk Assessment
Sensitive cryptographic metadata can be read and written to attacker-controlled locations, weakening the confidentiality of encrypted volumes.
Recommendation
Update udisks to a version containing the fix that adds a policy check to the D-Bus method exporting encryption metadata.
Other vulnerabilities in udisks
See all- CVE-2026-26103High
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.
- CVE-2025-8067High
A flaw in the Udisks daemon allows unprivileged users to create loop devices via D-BUS without proper lower-bound validation of the file descriptor index. An attacker can pass a negative index value, causing a crash or local privilege escalation.
Original NVD description (English source)
A flaw was found in the udisks storage management daemon that allows unprivileged users to back up LUKS encryption headers without authorization. The issue occurs because a privileged D-Bus method responsible for exporting encryption metadata does not perform a policy check. As a result, sensitive cryptographic metadata can be read and written to attacker-controlled locations. This weakens the confidentiality guarantees of encrypted storage volumes.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS