CVE-2026-64042 | In the Linux kernel, the following vulnerability has been re… | CVSS 8.8 HIGH

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.

Metadata

CVE ID: CVE-2026-64042
State: PUBLISHED
Assigner: Linux
Reserved: 2026-07-19 07:54 UTC
Published: 2026-07-19 15:39 UTC
Last updated: 2026-07-20 13:42 UTC
Vendor / Product: Linux / Linux
Sources: cve.org · NVD

Severity & Metrics

8.8 HIGH CVSS 3.1

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

Affected products (2)

Vendor	Product	Platform	Versions
Linux	Linux	—	5d74781ebc86c5fa9e9d6934024c505412de9b52 < 8443cd4497a4498c4b01058d76a92116244cb605, 5d74781ebc86c5fa9e9d6934024c505412de9b52 < 702809dabdecca807bdd50cfdcc1c980feb2ba62
Linux	Linux	—	6.19, 0 < 6.19, 7.0.11 ≤ 7.0., 7.1 ≤

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.8	HIGH	3.1	cna	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References (2)