CVE-2025-21770

MediumCVSS 5.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-401

Affected software

VendorProductVersions
LinuxLinux>= 19911232713573a2ebea84a25bd4d71d024ed86b, < db60d2d896a17decd58d143eef92cf22eb0a0176; >= 19911232713573a2ebea84a25bd4d71d024ed86b, < 90d5429cd2921ca2714684ed525898d431bb9283; >= 19911232713573a2ebea84a25bd4d71d024ed86b, < 9759ae2cee7cd42b95f1c48aa3749bd02b5ddb08
LinuxLinux6.9

References

Timeline

Published
Feb 27, 2025
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2025-21770: Medium severity, CVSS 5.5 | Vulnix