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CVE-2026-64461

Published Jul 25, 2026 EPSS 0.18% (8th pctl)

Overview

CVE-2026-64461 is a known-severity vulnerability. It was published on July 25, 2026.

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

PCI: mediatek: Fix IRQ domain leak when port fails to enable

When mtk_pcie_enable_port() fails, mtk_pcie_port_free() removes the port

from pcie->ports and frees the port structure. However, the IRQ domains set

up earlier by mtk_pcie_init_irq_domain() are never freed.

Fix this by refactoring mtk_pcie_irq_teardown() into a per-port helper,

mtk_pcie_irq_teardown_port(), and calling it from mtk_pcie_setup() when

mtk_pcie_enable_port() fails. Since the IRQ teardown must only happen in

the probe error path (during resume, child devices may have active MSI

mappings and the NOIRQ context prohibits sleeping locks),

mtk_pcie_enable_port() is changed to return an error code so callers can

distinguish the two paths and act accordingly.

This issue was reported by Sashiko while reviewing the EcoNet EN7528 SoC

support series.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Ref git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12 Ref git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225 Ref git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986 Ref git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e Ref git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76 Ref git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035 Ref git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7 Ref git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0

Frequently Asked Questions

What is CVE-2026-64461?

CVE-2026-64461 is a known-severity vulnerability. It was published on July 25, 2026.

How severe is CVE-2026-64461?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-64461?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-64461?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-64461 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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