CVE-2026-46083
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SPI Resource Leak in Linux Kernel

Publication date: 2026-05-27

Last updated on: 2026-05-27

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: spi: fix resource leaks on device setup failure Make sure to call controller cleanup() if spi_setup() fails while registering a device to avoid leaking any resources allocated by setup().
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Meta Information
Published
2026-05-27
Last Modified
2026-05-27
Generated
2026-06-16
AI Q&A
2026-05-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-46083
EUVD
EUVD-2026-32466
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel *
linux_kernel linux_kernel *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is related to the Linux kernel's SPI (Serial Peripheral Interface) subsystem. It involves resource leaks that occur when the device setup process fails during spi_setup(). Specifically, if spi_setup() fails while registering a device, the controller cleanup() function is not called, which leads to allocated resources not being properly released.

Impact Analysis

The impact of this vulnerability is that it can cause resource leaks in the Linux kernel when SPI device setup fails. Resource leaks can lead to increased memory usage or other resource exhaustion, potentially degrading system performance or stability over time.

Mitigation Strategies

The vulnerability is fixed by ensuring that the controller cleanup() function is called if spi_setup() fails during device registration to avoid resource leaks.

To mitigate this vulnerability, update your Linux kernel to the version where this fix is applied.

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