CVE-2023-53674
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-07

Last updated on: 2026-02-26

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: clk: Fix memory leak in devm_clk_notifier_register() devm_clk_notifier_register() allocates a devres resource for clk notifier but didn't register that to the device, so the notifier didn't get unregistered on device detach and the allocated resource was leaked. Fix the issue by registering the resource through devres_add(). This issue was found with kmemleak on a Chromebook.
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Meta Information
Published
2025-10-07
Last Modified
2026-02-26
Generated
2026-06-16
AI Q&A
2025-10-07
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53674
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability is a memory leak in the Linux kernel related to the function devm_clk_notifier_register(). The function allocates a resource for a clock notifier but fails to register it properly with the device. As a result, when the device is detached, the notifier is not unregistered and the allocated memory resource is leaked. The issue was fixed by ensuring the resource is registered correctly using devres_add().

Impact Analysis

This vulnerability can lead to memory leaks in the Linux kernel, which over time may cause increased memory usage and potentially degrade system performance or stability, especially on devices like Chromebooks where it was originally found.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version that includes the fix for the memory leak in devm_clk_notifier_register(). The fix involves registering the resource properly through devres_add() to prevent memory leaks on device detach.

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