CVE-2026-64476: vfio/pci: Latch disable_idle_d3 per device

highCVSS 7.1CVE-2026-64476

CSIRTS triage

vendor: Linux product: vfio/pciOther

What: The driver needs to latch the disable_idle_d3 setting per device to function correctly.
Who is affected: Deployments using the vfio/pci driver.
Urgency: Remediation is important to ensure proper device functionality, with no current exploitation known.
Action: Update the vfio/pci driver.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.1
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64476

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-644760.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64476	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownCVE-2026-64476: In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Latch disable_id…nvd

Recent advisories for vfio/pci

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-64476: In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Latch disable_id…nvd · 2026-07-25
highCVE-2026-64475: In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Release the VGA …nvd · 2026-07-25
highCVE-2026-64042: In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Check BAR resour…nvd · 2026-07-19
highCVE-2026-64475: vfio/pci: Release the VGA arbiter client on register_device() failuremsrc · 2026-07-14
highCVE-2026-53322: In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Clean up DMABUFs…nvd · 2026-06-26