CVE-2025-8067

CVE Details

Release Date:	2025-08-28
Impact:	Important	What is this?

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.

See more information about CVE-2025-8067 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	8.5
Vector String:	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	None
Scope:	Changed
Confidentiality Impact:	Low
Integrity Impact:	Low
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 10 (udisks2)	ELSA-2025-15020	2025-09-03
Oracle Linux version 8 (udisks2)	ELSA-2025-15017	2025-09-02
Oracle Linux version 9 (udisks2)	ELSA-2025-15018	2025-09-02