Linux UDisks Daemon Vulnerability allows Attackers Access to Privileged User Files
“Attacking privileged user files became easy via the Linux UDisks Daemon Vulnerability. Know how?”
Red Hat has revealed a serious security vulnerability in the Udisks daemon that enables unauthorized users to access files belonging to privileged accounts by taking advantage of an out-of-bounds read vulnerability.
Red Hat Product Security assigned the vulnerability, known as CVE-2025-8067, an Important severity rating after it was made public on August 28, 2025.
The Udisks daemon manages storage devices, including creating and removing loop devices, over a D-BUS interface while it is operating normally.
However, the loop device handler has a bug that prevents it from correctly validating the lower bound of the file index argument that clients supply.
The handler ignores negative values, even if it makes sure the index doesn’t exceed the permitted maximum.
By providing a negative index, an attacker can take advantage of this carelessness and have the daemon read memory outside the file descriptor list’s boundaries.
| CVE Identifier | Severity | CVSS v3.1 Base Score | Remediation |
| CVE-2025-8067 | Important | 8.5 | Install updated Udisks packages immediately |
The daemon may collapse as a result of this out-of-bounds read, which might lead to a denial-of-service attack, or privileged users’ private memory contents, including cryptographic keys or user credentials, may be exposed.
The advice claims that the attack complexity is modest and that successful exploitation necessitates neither user interaction nor privileges.
There is a serious danger of local privilege escalation because any user with access to the D-BUS interface can initiate the vulnerability locally.
Because of its minimal complexity, lack of required credentials, and high availability effect, Red Hat’s initial CVSS v3.1 score for this problem is 8.5 out of 10, indicating a high base severity.
Red Hat Enterprise Linux versions 6 through 10 are among the impacted distributions, which include several Udisks packages, including udisks2, libudisks2, udisks2-iscsi, udisks2-lsm, and udisks2-lvm2.
Packages named “udisks” and “udisks-devel” for RHEL 6 are affected; however, there are no upcoming solutions for those out-of-support versions. Updated packages are available for RHEL 7, 8, 9, and 10, and they should be installed as a way to reduce the risk.
The only remedy Red Hat provides for CVE-2025-8067 is to install the updated packages.
As soon as the patched Udisks packages are made available through subscription repositories or the Red Hat Customer Portal, system administrators are encouraged to update their systems.
Vulnerable Udisks daemons running continuously could leave systems open to local attackers looking to access private data without authorization or disrupt vital storage management functions.
The NVD record for CVE-2025-8067 and the Red Hat Bugzilla entry (ID 2388623) contain more technical information and references.
In multi-user setups, organizations should prioritize patch distribution, examine their inventory of impacted systems, and keep an eye out for unusual D-BUS calls to Udisks in logs.
If this vulnerability is not fixed right away, attackers may be able to use leaked memory addresses to get around security measures like ASLR and create more sophisticated exploits.
About The Author
Suraj Koli is a content specialist in technical writing about cybersecurity & information security. He has written many amazing articles related to cybersecurity concepts, with the latest trends in cyber awareness and ethical hacking. Find out more about “Him.”
Read More:
Krishnanagar Residents Lost ₹7L in APK-Based Scams
About Author
English