CVE-2026-43160
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Mutex Initialization Flaw in Linux Kernel macsmc Subsystem

Publication date: 2026-05-06

Last updated on: 2026-05-06

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: mfd: macsmc: Initialize mutex Initialize struct apple_smc's mutex in apple_smc_probe(). Using the mutex uninitialized surprisingly resulted only in occasional NULL pointer dereferences in apple_smc_read() calls from the probe() functions of sub devices.
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Meta Information
Published
2026-05-06
Last Modified
2026-05-06
Generated
2026-06-16
AI Q&A
2026-05-06
EPSS Evaluated
2026-06-15
NVD
CVE-2026-43160
EUVD
EUVD-2026-27723
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability in the Linux kernel involves the macsmc driver where a mutex in the apple_smc structure was not initialized in the apple_smc_probe() function.

Because the mutex was uninitialized, it occasionally caused NULL pointer dereferences during apple_smc_read() calls from the probe functions of sub devices.

Impact Analysis

The impact of this vulnerability is that it can cause occasional NULL pointer dereferences, which may lead to instability or crashes in the affected Linux kernel components interacting with the apple_smc driver.

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