CVE-2025-40227
Unknown Unknown - Not Provided

BaseFortify

Publication date: 2025-12-04

Last updated on: 2025-12-04

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: dealloc commit test ctx always The damon_ctx for testing online DAMON parameters commit inputs is deallocated only when the test fails. This means memory is leaked for every successful online DAMON parameters commit. Fix the leak by always deallocating it.

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Meta Information

Published
2025-12-04
Last Modified
2025-12-04
Generated
2026-07-07
AI Q&A
2025-12-04
EPSS Evaluated
2026-07-05
NVD
CVE-2025-40227
EUVD
EUVD-2025-201232

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a memory leak in the Linux kernel's DAMON subsystem. Specifically, the damon_ctx object used for testing online DAMON parameters is only deallocated when the test fails, causing memory to be leaked every time the test succeeds. The fix ensures that the damon_ctx is always deallocated, preventing the memory leak.

Impact Analysis

The memory leak caused by this vulnerability can lead to increased memory usage over time, potentially degrading system performance or causing resource exhaustion on systems running the affected Linux kernel.

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