Riskcovery

CVE-2026-64042

vfio/pci: Check BAR resources before exporting a DMABUF

State
Published
Severity
8.8 High
Published
Jul 19, 2026
Updated
Aug 5, 2026
Reserved
Jul 19, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 5d74781ebc86c5fa9e9d6934024c505412de9b52 to before 8443cd4497a4498c4b01058d76a92116244cb605Affected
  • 5d74781ebc86c5fa9e9d6934024c505412de9b52 to before 702809dabdecca807bdd50cfdcc1c980feb2ba62Affected
LinuxLinux
  • 6.19Affected
  • before 6.19Not affected
  • 7.0.11 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

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