CVE-2025-40203
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-12

Last updated on: 2025-11-14

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: listmount: don't call path_put() under namespace semaphore Massage listmount() and make sure we don't call path_put() under the namespace semaphore. If we put the last reference we're fscked.
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Meta Information
Published
2025-11-12
Last Modified
2025-11-14
Generated
2026-06-16
AI Q&A
2025-11-13
EPSS Evaluated
2026-06-14
NVD
CVE-2025-40203
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 involves the Linux kernel function listmount(), where calling path_put() under the namespace semaphore can cause issues if the last reference is released improperly. The fix ensures that path_put() is not called while holding the namespace semaphore to prevent potential problems.

Impact Analysis

If the last reference is released incorrectly by calling path_put() under the namespace semaphore, it can lead to system instability or crashes, potentially affecting the reliability of the Linux kernel's mount namespace handling.

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