CVE-2026-64042CWE-862broken-access-control

CVE-2026-64042

High · published July 19, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
3.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00141 · 3.1th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-07-19T20:17Z
Affected products (4)
ProductVersionsFixed in
linux/linux_kernel≥ 6.19, < 7.0.117.0.11
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
References (2)
https://git.kernel.org/stable/c/702809dabdecca807bdd50cfdcc1c980feb2ba62 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8443cd4497a4498c4b01058d76a92116244cb605 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 19 JUL 15:39Z
    vfio/pci: Check BAR resources before exporting a DMABUF
    cvelistv5