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CVE-2025-21770

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: iommu: Fix potential memory leak in iopf_queue_remove_device() The iopf_queue_remove_device() helper removes a device from the…

Published Feb 27, 2025CWE-401EPSS 0.22%

Overview

CVE-2025-21770 is a medium-severity vulnerability. It was published on February 27, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

iommu: Fix potential memory leak in iopf_queue_remove_device()

The iopf_queue_remove_device() helper removes a device from the per-iommu

iopf queue when PRI is disabled on the device. It responds to all

outstanding iopf's with an IOMMU_PAGE_RESP_INVALID code and detaches the

device from the queue.

However, it fails to release the group structure that represents a group

of iopf's awaiting for a response after responding to the hardware. This

can cause a memory leak if iopf_queue_remove_device() is called with

pending iopf's.

Fix it by calling iopf_free_group() after the iopf group is responded.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/90d5429cd2921ca2714684ed525898d431bb9283Refgit.kernel.org/stable/c/9759ae2cee7cd42b95f1c48aa3749bd02b5ddb08Refgit.kernel.org/stable/c/db60d2d896a17decd58d143eef92cf22eb0a0176

How CyberStrike helps

Frequently asked questions

What is CVE-2025-21770?

CVE-2025-21770 is a medium-severity vulnerability. It was published on February 27, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-21770?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-21770?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-21770?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-21770 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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