High 8.8Published Jul 19, 2026

CVE-2026-64042vfio/pci: Check BAR resources before exporting a DMABUF

Updated under an hour ago (Oct 27, 2026, 5:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 5d74781ebc86c5fa9e9d6934024c505412de9b52 before 8443cd4497a4498c4b01058d76a92116244cb605; from 5d74781ebc86c5fa9e9d6934024c505412de9b52 before 702809dabdecca807bdd50cfdcc1c980feb2ba62	CNA record
linux linux_kernel linux:linux_kernel	from 6.19 before 7.0.11; 7.1; 7.1; 7.1	NVD

References

References

https://git.kernel.org/stable/c/8443cd4497a4498c4b01058d76a92116244cb605	patch
https://git.kernel.org/stable/c/702809dabdecca807bdd50cfdcc1c980feb2ba62	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.