CVE-2025-38297

Kernel fault via uninitialized Energy Model performance

Published Jul 10, 2025 · Updated May 11, 2026

Divide-by-zero in the Linux kernel Energy Model from 6.9 allows attackers to trigger a kernel fault during non-CPU device cost calculation. em_init_performance() leaves table[i].performance uninitialized for non-CPU devices, and em_compute_costs() later uses that value as a divisor. Reachability requires CONFIG_ENERGY_MODEL and the non-CPU cost path; the public record identifies no triggering user action or required privilege.

CVSS severityUnavailable
Unscored
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Divide-by-zero in the Linux kernel Energy Model from 6.9 allows attackers to trigger a kernel fault during non-CPU device cost calculation. em_init_performance() leaves table[i].performance uninitialized for non-CPU devices, and em_compute_costs() later uses that value as a divisor. Reachability requires CONFIG_ENERGY_MODEL and the non-CPU cost path; the public record identifies no triggering user action or required privilege.

The record

CVE
CVE-2025-38297
Published
Jul 10, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 10, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1b600da510735a0f92c8b4140a7e2cb037a6a6c3 <14cbdd64f3870cf0a2d94b87919b9056448c59a0
  2. Affected versionversion=1b600da510735a0f92c8b4140a7e2cb037a6a6c3 <179c0c7044a378198adb36f2a12410ab68cc730a
  3. Affected versionversion=1b600da510735a0f92c8b4140a7e2cb037a6a6c3 <81d72f9241d884ec29524431f74f8009310cfa0c
  4. Affected versionversion=6.9

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1b600da510735a0f92c8b4140a7e2cb037a6a6c3 <14cbdd64f3870cf0a2d94b87919b9056448c59a0; version=1b600da510735a0f92c8b4140a7e2cb037a6a6c3 <179c0c7044a378198adb36f2a12410ab68cc730a; version=1b600da510735a0f92c8b4140a7e2cb037a6a6c3 <81d72f9241d884ec29524431f74f8009310cfa0c; version=6.9

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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