# CVE-2025-71186

## Summary

- **CVE ID:** CVE-2025-71186
- **Severity:** MEDIUM
- **CVSS Score:** 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** N/A
- **Published:** Jan 31, 2026
- **Last Modified:** Sep 8, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: stm32: 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.

## Affected Products

- Linux — Linux (df7e762db5f6c8dbd9e480f1c9ef9851de346657)
- Linux — Linux (4.15)
- Linux — Linux (0)
- Linux — Linux (5.10.249)
- Linux — Linux (5.15.199)
- Linux — Linux (6.1.162)
- Linux — Linux (6.6.122)
- Linux — Linux (6.12.67)
- Linux — Linux (6.18.7)
- Linux — Linux (6.19)

## References

- [CNA](https://git.kernel.org/stable/c/3b42020e6790a5e19b36c187ed5b488a5716f97f)
- [CNA](https://git.kernel.org/stable/c/6393da54dcb3488c080a183c4182ddec71ba8d7f)
- [CNA](https://git.kernel.org/stable/c/1dda2a32303df0091896b01a9d09070d61fa344c)
- [CNA](https://git.kernel.org/stable/c/1a179ac01ff3993ab97e33cc77c316ed7415cda1)
- [CNA](https://git.kernel.org/stable/c/2fb10259d4efb4367787b5ae9c94192e8a91c648)
- [CNA](https://git.kernel.org/stable/c/3ef52d31cce8ba816739085a61efe07b63c6cf27)
- [CNA](https://git.kernel.org/stable/c/dd6e4943889fb354efa3f700e42739da9bddb6ef)
- [siemens-SADP](https://cert-portal.siemens.com/productcert/html/ssa-253495.html)
- [siemens-SADP](https://cert-portal.siemens.com/productcert/html/ssa-019113.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.19%
- **EPSS Percentile:** 9.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._