# CVE-2022-50311: cxl: Fix refcount leak in cxl\_calc\_capp\_routing

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-09-15 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.12

## Description

In the Linux kernel, the following vulnerability has been resolved: cxl: Fix refcount leak in cxl_calc_capp_routing of_get_next_parent() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. This function only calls of_node_put() in normal path, missing it in the error path. 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.
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## 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/c9bebc503881c1391f6c4f820134884adecf1519
- https://git.kernel.org/stable/c/ee870f72465015327ad96204b0e92450d04870cd
- https://git.kernel.org/stable/c/f2d60f6ba173cded65081cee690b67802395a479
- https://git.kernel.org/stable/c/81c8bbf5b2b5f0c8030fff1716c00849cda8571a
- https://git.kernel.org/stable/c/6a310e8db5409676b4b3e6c1f54dff174e4fd04d
- https://git.kernel.org/stable/c/651e8bc9d0418c20a1989b7c078c64c2a6346fa3
- https://git.kernel.org/stable/c/2d7b6580384e6d65419933ddc525bd176095da54
- https://git.kernel.org/stable/c/1d09697ff22908ae487fc8c4fbde1811732be523

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Page: https://cve.now/CVE-2022-50311
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