PT-2026-64682 · Linux · Linux
CVE-2026-64461
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Published
2026-07-25
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Updated
2026-07-25
None
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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.
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Related Identifiers
Affected Products
Linux