Missing Authorization The advisory has been revoked - it doesn't affect any version of package udisks2 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN11-UDISKS2-15358012
- published26 Feb 2026
- disclosed25 Feb 2026
Introduced: 25 Feb 2026
CVE-2026-26103 (opens in a new tab)Amendment
The Debian security team deemed this advisory irrelevant for Debian:11.
NVD Description
Note: Versions mentioned in the description apply only to the upstream udisks2 package and not the udisks2 package as distributed by Debian.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2026-26103
- https://access.redhat.com/security/cve/CVE-2026-26103
- https://bugzilla.redhat.com/show_bug.cgi?id=2433719
- https://access.redhat.com/errata/RHSA-2026:3476
- https://github.com/storaged-project/udisks/security/advisories/GHSA-c75h-phf8-ccjm
- https://access.redhat.com/errata/RHSA-2026:5831