CVE-2026-64461

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the PCI mediatek component where an IRQ domain leak occurs when a port fails to enable. Specifically, when the function mtk pcie enable port() fails, the mtk pcie port free() function removes the port from pcie->ports and frees the port structure, but it fails to free the IRQ domains previously established by mtk pcie init irq domain(). To resolve this, mtk pcie irq teardown() is refactored into a per-port helper called mtk pcie irq teardown port(), which is then invoked by mtk pcie setup() upon the failure of mtk pcie enable port(). Additionally, mtk pcie enable port() is modified to return an error code to allow callers to distinguish between the probe error path and the resume path, as IRQ teardown must only occur during the probe error path to avoid issues with active MSI mappings and sleeping locks in NOIRQ context.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.