Bug 2419840 (CVE-2025-40298)

Summary: CVE-2025-40298 kernel: gve: Implement settime64 with -EOPNOTSUPP
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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OS: Linux   
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Description OSIDB Bzimport 2025-12-08 07:02:34 UTC 
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.
Comment 1 Alexander B 2025-12-10 11:00:06 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025120819-CVE-2025-40298-af76@gregkh/T