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

vfio/pci: Check BAR resources before exporting a DMABUF

A DMABUF exports access to BAR resources and, although they are
requested at startup time, we need to ensure they really were reserved
before exporting. Otherwise, it's possible to access unreserved
resources through the export.

Add a check to the DMABUF-creation path.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
5d74781ebc86c5fa9e9d6934024c505412de9b52 affected < 8443cd4497a4498c4b01058d76a92116244cb605
5d74781ebc86c5fa9e9d6934024c505412de9b52 affected < 702809dabdecca807bdd50cfdcc1c980feb2ba62
Linux Linux affected
Version Status Constraints
6.19 affected —
0 unaffected < 6.19
7.0.11 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

No data.

No data.

No data.

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Fixes

Solution

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Workaround

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References
Link Providers
https://git.kernel.org/stable/c/702809dabdecca807bdd50cfdcc1c980feb2ba62 cve-icon
https://git.kernel.org/stable/c/8443cd4497a4498c4b01058d76a92116244cb605 cve-icon
History

Sun, 19 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Check BAR resources before exporting a DMABUF A DMABUF exports access to BAR resources and, although they are requested at startup time, we need to ensure they really were reserved before exporting. Otherwise, it's possible to access unreserved resources through the export. Add a check to the DMABUF-creation path.
Title vfio/pci: Check BAR resources before exporting a DMABUF
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-19T15:39:28.604Z

Reserved: 2026-07-19T07:54:57.029Z

Link: CVE-2026-64042

cve-icon Vulnrichment

No data.

cve-icon NVD

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cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.