BaseFortify

Publication date: 2026-01-31

Last updated on: 2026-06-02

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: at_hdmac: fix device leak on of_dma_xlate() Make sure to drop the reference taken when looking up the DMA platform device during of_dma_xlate() when releasing channel resources. Note that commit 3832b78b3ec2 ("dmaengine: at_hdmac: add missing put_device() call in at_dma_xlate()") fixed the leak in a couple of error paths but the reference is still leaking on successful allocation.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-01-31

Last Modified

2026-06-02

Generated

2026-07-06

AI Q&A

2026-01-31

EPSS Evaluated

2026-07-05

NVD

CVE-2025-71191

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	3.10
linux	linux_kernel	From 6.13 (inc) to 6.18.7 (exc)
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	From 5.11 (inc) to 5.15.199 (exc)
linux	linux_kernel	From 5.16 (inc) to 6.1.162 (exc)
linux	linux_kernel	From 6.2 (inc) to 6.6.122 (exc)
linux	linux_kernel	From 6.7 (inc) to 6.12.67 (exc)
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	From 3.10.1 (inc) to 5.10.249 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is a device reference leak in the Linux kernel's dmaengine at_hdmac driver. Specifically, during the of_dma_xlate() function, a reference to the DMA platform device is taken but not properly released when channel resources are freed. Although a previous fix addressed some error paths, the reference leak still occurs on successful allocation, potentially causing resource management issues.

Impact Analysis

The vulnerability can lead to a device reference leak in the Linux kernel, which may cause resource exhaustion or instability in systems using the affected dmaengine at_hdmac driver. Over time, this could degrade system performance or cause unexpected behavior due to unreleased device references.

Mitigation Strategies

Apply the Linux kernel update that includes the fix for the dmaengine at_hdmac device leak in of_dma_xlate(). This involves ensuring your kernel version includes the commit 3832b78b3ec2 or later, which adds the missing put_device() call to prevent the device reference leak.

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