CVE-2025-8067
udisks2 - security update
Description
A flaw was found in the Udisks daemon, where it allows unprivileged users to create loop devices using the D-BUS system. This is achieved via the loop device handler, which handles requests sent through the D-BUS interface. As two of the parameters of this handle, it receives the file descriptor list and index specifying the file where the loop device should be backed. The function itself validates the index value to ensure it isn't bigger than the maximum value allowed. However, it fails to validate the lower bound, allowing the index parameter to be a negative value. Under these circumstances, an attacker can cause the UDisks daemon to crash or perform a local privilege escalation by gaining access to files owned by privileged users.
How to fix CVE-2025-8067
To remediate CVE-2025-8067, upgrade the affected package to a fixed version below.
- —upgrade to 2.9.2-2+deb11u3 or later
- —upgrade to 2.9.2-2+deb11u3 or later
- —upgrade to 2.9.4-4+deb12u2 or later
Is CVE-2025-8067 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.9.2-2+deb11u3
- from 0, < 2.9.2-2+deb11u3
- from 0, < 2.9.4-4+deb12u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H |