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CVE-2026-53322

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Clean up DMABUFs before disabling function On device shutdown, make vfio_pci_core_close_device() call vfio_pci_dma_bu…

Published Jun 26, 2026CWE-415EPSS 0.13%

Overview

CVE-2026-53322 is a high-severity vulnerability. It was published on June 26, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. 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:

vfio/pci: Clean up DMABUFs before disabling function

On device shutdown, make vfio_pci_core_close_device() call

vfio_pci_dma_buf_cleanup() before the function is disabled via

vfio_pci_core_disable(). This ensures that all access via DMABUFs is

revoked before the function's BARs become inaccessible.

This fixes an issue where, if the function is disabled first, a tiny

window exists in which the function's MSE is cleared and yet BARs

could still be accessed via the DMABUF. The resources would also be

freed and up for grabs by a different driver.

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/4f1000a30f67cf7d328059242776a858611d5ef9Refgit.kernel.org/stable/c/d97708701434ce72968e771976aaf9d3438fcafdRefaccess.redhat.com/security/cve/CVE-2026-53322Refbugzilla.redhat.com/show_bug.cgi?id=2493709Refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53322.json

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53322?

CVE-2026-53322 is a high-severity vulnerability. It was published on June 26, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-53322?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-53322?

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-2026-53322?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53322 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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