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CVE Record

CVE-2025-68752: iavf: Implement settime64 with -EOPNOTSUPP

In the Linux kernel, the following vulnerability has been resolved: iavf: Implement settime64 with -EOPNOTSUPP ptp_clock_settime() assumes every ptp_clock has implemented settime64(). Stub it with -EOPNOTSUPP to prevent a NULL dereference. The fix is similar to commit 329d050bbe63 ("gve: Implement settime64 with -EOPNOTSUPP").

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue can cause a crash when the iavf network driver exposes a PTP clock without a required set-time handler. The public record describes a NULL pointer dereference, not data theft or remote takeover. Business urgency depends on whether systems use affected Linux kernels and the Intel iavf virtual function driver with PTP clock support.

Executive priority

Treat this as a targeted kernel availability issue until vendor scoring is available. It is not currently supported as exploited-in-the-wild, but kernel crashes on networked infrastructure can still affect service reliability.

Technical view

CVE-2025-68752 is a Linux kernel iavf driver flaw. ptp_clock_settime() assumes settime64() exists for every PTP clock; iavf lacked it, creating a NULL dereference. The fix stubs settime64() with -EOPNOTSUPP, matching a prior gve driver pattern. Public sources do not provide CVSS, CWE, or exploit details.

Likely exposure

Exposure is likely limited to Linux systems running affected kernel builds with the iavf driver and relevant PTP clock functionality. The source bundle lists Linux kernel versions and stable fixes, but downstream distro package impact is not specified.

Exploitation context

The bundle says KEV is false and provides no cited evidence of active exploitation. The described impact is a NULL dereference, so availability risk is the clearest concern. Required local privileges or trigger conditions are not detailed in the provided sources.

Researcher notes

The key code issue is missing settime64() in iavf PTP clock operations. The public record states the fix returns -EOPNOTSUPP to avoid NULL dereference. Source evidence is sparse; validate exact affected and fixed ranges through kernel commits or distro advisories.

Mitigation direction

  • Check vendor kernel advisories for CVE-2025-68752 and iavf-specific package status.
  • Prioritize kernel updates that include the referenced stable commits.
  • Identify systems using the iavf driver and PTP clock functionality.
  • If patching is delayed, assess whether iavf/PTP use can be reduced operationally.

Validation and detection

  • Inventory Linux kernel versions on virtualization hosts and guests using iavf.
  • Confirm whether loaded drivers include iavf on exposed systems.
  • Map deployed kernels to vendor advisories or the referenced stable commits.
  • Review kernel logs for iavf/PTP-related crashes or NULL dereference events.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2025-68752 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
0ADP providers
4Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxd734223b2f0dc4f5826204ee628ad6273148223d, d734223b2f0dc4f5826204ee628ad6273148223d, d734223b2f0dc4f5826204ee628ad6273148223dunaffected
LinuxLinux6.15, 0, 6.17.13, 6.18.2, 6.19affected
Weakness

CWE details

No CWE listed

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