Bug 2419952 (CVE-2025-40299) - CVE-2025-40299 kernel: gve: Implement gettimex64 with -EOPNOTSUPP
Summary: CVE-2025-40299 kernel: gve: Implement gettimex64 with -EOPNOTSUPP
Keywords:
Status: NEW
Alias: CVE-2025-40299
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-08 07:11 UTC by OSIDB Bzimport
Modified: 2026-06-29 20:15 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2025-12-08 07:11:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

gve: Implement gettimex64 with -EOPNOTSUPP

gve implemented a ptp_clock for sole use of do_aux_work at this time.
ptp_clock_gettime() and ptp_sys_offset() assume every ptp_clock has
implemented either gettimex64 or gettime64. Stub gettimex64 and return
-EOPNOTSUPP to prevent NULL dereferencing.
Comment 1 Jon Moroney 2025-12-08 16:58:05 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025120819-CVE-2025-40299-fd5b@gregkh/T
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