# CVE-2025-8067: Udisks: out-of-bounds read in udisks daemon

> An out-of-bounds read in the UDisks daemon allows local attackers to crash the service or escalate privileges by accessing privileged files via negative index parameters.

- **Severity:** High 8.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 28 Aug 2025
- **Updated:** 29 Jun 2026
- **Also known as:** ALSA-2025:15017, ALSA-2025:15018, ALSA-2025:15020, AZL-73051, CLSA-2025-1763123915, CLSA-2025-1763141692, CLSA-2025-1764885482, CLSA-2026-1791305083, DEBIAN-CVE-2025-8067, DLA-4284-1, DSA-5989-1, MGASA-2025-0231, OESA-2025-2277, RHSA-2025:15017, RHSA-2025:15018, RHSA-2025:15020, RHSA-2025:15956, RHSA-2025:16021, RHSA-2025:16090, RHSA-2025:16106, RHSA-2025:16121, RHSA-2025:16122, RHSA-2025:16125, RHSA-2025:16130, RLSA-2025:15017, RLSA-2025:15018, RLSA-2025:15020, SUSE-SU-2025:03015-1, SUSE-SU-2025:03016-1, SUSE-SU-2025:03017-1, SUSE-SU-2025:20718-1, SUSE-SU-2025:20801-1, SUSE-SU-2026:20206-1, SUSE-SU-2026:20213-1, UBUNTU-CVE-2025-8067, USN-7723-1, openSUSE-SU-2025:15511-1, openSUSE-SU-2026:20141-1

## What is CVE-2025-8067?

CVE-2025-8067 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 28 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2025-8067?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `libudisks2` | AlmaLinux:10 | All versions | 2.10.90-5.el10_0.1 |
| `libudisks2-devel` | AlmaLinux:10 | All versions | 2.10.90-5.el10_0.1 |
| `udisks2` | AlmaLinux:10 | All versions | 2.10.90-5.el10_0.1 |
| `udisks2-iscsi` | AlmaLinux:10 | All versions | 2.10.90-5.el10_0.1 |
| `udisks2-lsm` | AlmaLinux:10 | All versions | 2.10.90-5.el10_0.1 |
| `udisks2-lvm2` | AlmaLinux:10 | All versions | 2.10.90-5.el10_0.1 |
| `libudisks2` | AlmaLinux:8 | All versions | 2.9.0-16.el8_10.1 |
| `libudisks2-devel` | AlmaLinux:8 | All versions | 2.9.0-16.el8_10.1 |
| `udisks2` | AlmaLinux:8 | All versions | 2.9.0-16.el8_10.1 |
| `udisks2-iscsi` | AlmaLinux:8 | All versions | 2.9.0-16.el8_10.1 |
| `udisks2-lsm` | AlmaLinux:8 | All versions | 2.9.0-16.el8_10.1 |
| `udisks2-lvm2` | AlmaLinux:8 | All versions | 2.9.0-16.el8_10.1 |
| `libudisks2` | AlmaLinux:9 | All versions | 2.9.4-11.el9_6.1 |
| `libudisks2-devel` | AlmaLinux:9 | All versions | 2.9.4-11.el9_6.1 |
| `udisks2` | AlmaLinux:9 | All versions | 2.9.4-11.el9_6.1 |
| `udisks2-iscsi` | AlmaLinux:9 | All versions | 2.9.4-11.el9_6.1 |
| `udisks2-lsm` | AlmaLinux:9 | All versions | 2.9.4-11.el9_6.1 |
| `udisks2-lvm2` | AlmaLinux:9 | All versions | 2.9.4-11.el9_6.1 |
| `libudisks2` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `libudisks2-debuginfo` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `libudisks2-devel` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `udisks2` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `udisks2-debuginfo` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `udisks2-debugsource` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `udisks2-iscsi` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `udisks2-iscsi-debuginfo` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `udisks2-lsm` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `udisks2-lsm-debuginfo` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `udisks2-lvm2` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `udisks2-lvm2-debuginfo` | Red Hat:enterprise_linux:10.0 | All versions | 0:2.10.90-5.el10_0.1 |
| `libudisks2` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-16.el8_10.1 |
| `libudisks2-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-16.el8_10.1 |
| `udisks2` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-16.el8_10.1 |
| `udisks2-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-16.el8_10.1 |
| `udisks2-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-16.el8_10.1 |
| `udisks2-iscsi` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-16.el8_10.1 |
| `udisks2-iscsi-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-16.el8_10.1 |
| `udisks2-lsm` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-16.el8_10.1 |
| `udisks2-lsm-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-16.el8_10.1 |
| `udisks2-lvm2` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.9.0-16.el8_10.1 |

## How do I fix CVE-2025-8067?

Apply the vendor's patch.

## Is CVE-2025-8067 being exploited?

There is no known exploitation of CVE-2025-8067 in the wild and no public exploit code.

Public exploit code:

- Proof of Concept for CVE-2025-8067 (github_poc): https://github.com/born0monday/CVE-2025-8067

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-8067 and fix it if it is affected.

What it is: CVE-2025-8067 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 28 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-8067 in the wild and no public exploit code.

Affected product: Red Hat Enterprise Linux 10. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-8067/ (Markdown: https://insights.sbomify.com/CVE-2025-8067/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-8067
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-8067
- OSV: https://osv.dev/vulnerability/CVE-2025-8067

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-8067/
Summaries are generated and may contain mistakes; the official description above is the record.