CVE-2025-40298
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BaseFortify

Publication date: 2025-12-08

Last updated on: 2025-12-08

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: gve: Implement settime64 with -EOPNOTSUPP ptp_clock_settime() assumes every ptp_clock has implemented settime64(). Stub it with -EOPNOTSUPP to prevent a NULL dereference.

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Meta Information

Published
2025-12-08
Last Modified
2025-12-08
Generated
2026-07-06
AI Q&A
2025-12-08
EPSS Evaluated
2026-07-05
NVD
CVE-2025-40298
EUVD
EUVD-2025-201646

Affected Vendors & Products

Currently, no data is known.

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability occurs in the Linux kernel where the function ptp_clock_settime() assumes that every ptp_clock has implemented the settime64() function. However, if settime64() is not implemented, this can lead to a NULL pointer dereference. The fix involves stubbing settime64() with an error code (-EOPNOTSUPP) to prevent this NULL dereference.

Impact Analysis

The vulnerability can cause a NULL pointer dereference in the Linux kernel, which may lead to system crashes or instability when ptp_clock_settime() is called on a ptp_clock without settime64() implemented.

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