CVE-2023-53424
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-18

Last updated on: 2026-04-06

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: clk: mediatek: fix of_iomap memory leak Smatch reports: drivers/clk/mediatek/clk-mtk.c:583 mtk_clk_simple_probe() warn: 'base' from of_iomap() not released on lines: 496. This problem was also found in linux-next. In mtk_clk_simple_probe(), base is not released when handling errors if clk_data is not existed, which may cause a leak. So free_base should be added here to release base.
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Meta Information
Published
2025-09-18
Last Modified
2026-04-06
Generated
2026-06-16
AI Q&A
2025-09-18
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53424
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 5.15 (inc) to 6.3.13 (exc)
linux linux_kernel From 6.4 (inc) to 6.4.4 (exc)
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's MediaTek clock driver. Specifically, in the function mtk_clk_simple_probe(), a memory region allocated by of_iomap() (referred to as 'base') is not properly released when an error occurs and clk_data does not exist. This causes the allocated memory to leak because the code does not free it in all error handling paths.

Impact Analysis

The impact of this vulnerability is a memory leak in the kernel, which can lead to increased memory usage over time and potentially degrade system performance or stability. While it does not directly cause code execution or data corruption, the leak can accumulate and affect system reliability.

Mitigation Strategies

Apply the patch or update to the fixed version of the Linux kernel that includes the fix for the memory leak in the mediatek clk driver (specifically in mtk_clk_simple_probe()). This will ensure that the base memory allocated by of_iomap() is properly released, preventing the leak.

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