What’s Vulnerable › Vulnerabilities

CVE-2026-26104: Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-25 · updated 2026-06-17
• Weakness: CWE-862

Description

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.

Affected products

• Freedesktop Udisks: 2.0.0
• Red Hat Enterprise Linux: 10.0

References

• https://access.redhat.com/errata/RHSA-2026:3476
• https://access.redhat.com/errata/RHSA-2026:5831
• https://access.redhat.com/security/cve/CVE-2026-26104
• https://bugzilla.redhat.com/show_bug.cgi?id=2433717
• https://github.com/storaged-project/udisks/security/advisories/GHSA-fcvx-497g-6xmw

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