CVE-2026-46226

Analyzed Analyzed - Analysis Complete

SPI Controller Deregistration Flaw in Linux Kernel

Publication date: 2026-05-28

Last updated on: 2026-06-10

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: spi: fsl: fix controller deregistration Make sure to deregister the controller before releasing underlying resources like DMA during driver unbind.

CVSS Scores

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Meta Information

Published

2026-05-28

Last Modified

2026-06-10

Generated

2026-07-08

AI Q&A

2026-05-28

EPSS Evaluated

2026-07-06

NVD

CVE-2026-46226

EUVD

EUVD-2026-32853

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 6.13 (inc) to 6.18.32 (exc)
linux	linux_kernel	From 6.7 (inc) to 6.12.90 (exc)
linux	linux_kernel	From 6.19 (inc) to 7.0.9 (exc)
linux	linux_kernel	From 4.3 (inc) to 6.6.140 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability relates to the Linux kernel's SPI (Serial Peripheral Interface) driver for Freescale (fsl) controllers. The issue was that the controller was not properly deregistered before releasing underlying resources such as DMA (Direct Memory Access) during the driver unbind process. This could lead to improper resource management.

Impact Analysis

If the controller is not deregistered correctly before releasing resources, it could cause system instability or resource conflicts. This might lead to crashes or unpredictable behavior in systems using the affected Linux kernel SPI driver.

Mitigation Strategies

To mitigate this vulnerability, ensure that the Linux kernel is updated to a version where the issue with the spi: fsl controller deregistration is fixed.

Specifically, make sure the controller is properly deregistered before releasing underlying resources like DMA during driver unbind.

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