| Name | CVE-2026-26103 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| udisks2 (PTS) | bullseye | 2.9.2-2+deb11u1 | fixed |
| bullseye (security) | 2.9.2-2+deb11u3 | fixed | |
| bookworm, bookworm (security) | 2.9.4-4+deb12u2 | fixed | |
| trixie (security), trixie | 2.10.1-12.1+deb13u1 | fixed | |
| forky | 2.11.0-2 | vulnerable | |
| sid | 2.11.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| udisks2 | source | bullseye | (not affected) | |||
| udisks2 | source | bookworm | (not affected) | |||
| udisks2 | source | trixie | (not affected) | |||
| udisks2 | source | (unstable) | 2.11.1-1 |
[trixie] - udisks2 <not-affected> (Vulnerable code not present)
[bookworm] - udisks2 <not-affected> (Vulnerable code not present)
[bullseye] - udisks2 <not-affected> (Vulnerable code not present)
https://bugzilla.redhat.com/show_bug.cgi?id=2433719
https://github.com/storaged-project/udisks/security/advisories/GHSA-c75h-phf8-ccjm
Introduces with: https://github.com/storaged-project/udisks/commit/629bcce24a3c368d2ab1dfcb87f0ef23a7fdd1c5 (udisks-2.10.90)
Fixed by: https://github.com/storaged-project/udisks/commit/dca17c25c12d99a5d4f257b96f9df59c9c02952a (udisks-2.11.1)