CVE-2025-38131

Kernel memory use-after-free via CoreSight configuration race

Published Jul 3, 2025 · Updated May 11, 2026

Use-after-free in affected Linux kernels allows local users to trigger access to a freed CoreSight configuration descriptor via configfs. cscfg_csdev_enable_active_config() releases its device lock without retaining the configuration descriptor while another CPU can deactivate the configuration and unload its module. Reachability requires concurrent configuration enablement, deactivation, and module unloading; no crash, privilege escalation, or data disclosure is reported.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in affected Linux kernels allows local users to trigger access to a freed CoreSight configuration descriptor via configfs. cscfg_csdev_enable_active_config() releases its device lock without retaining the configuration descriptor while another CPU can deactivate the configuration and unload its module. Reachability requires concurrent configuration enablement, deactivation, and module unloading; no crash, privilege escalation, or data disclosure is reported.

The record

CVE
CVE-2025-38131
Published
Jul 3, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 3, 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=5.15
  2. Affected versionversion=f8cce2ff3c04361b8843d8489620fda8880f668b <31028812724cef7bd57a51525ce58a32a6d73b22
  3. Affected versionversion=f8cce2ff3c04361b8843d8489620fda8880f668b <408c97c4a5e0b634dcd15bf8b8808b382e888164
  4. Affected versionversion=f8cce2ff3c04361b8843d8489620fda8880f668b <b3b4efa2e623aecaebd7c9b9e4171f5c659e9724
  5. Affected versionversion=f8cce2ff3c04361b8843d8489620fda8880f668b <dfe8224c9c7a43d356eb9f74b06868aa05f90223
  6. Affected versionversion=f8cce2ff3c04361b8843d8489620fda8880f668b <ed42ee1ed05ff2f4c36938379057413a40c56680

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=f8cce2ff3c04361b8843d8489620fda8880f668b <31028812724cef7bd57a51525ce58a32a6d73b22; version=f8cce2ff3c04361b8843d8489620fda8880f668b <408c97c4a5e0b634dcd15bf8b8808b382e888164; version=f8cce2ff3c04361b8843d8489620fda8880f668b <b3b4efa2e623aecaebd7c9b9e4171f5c659e9724; version=f8cce2ff3c04361b8843d8489620fda8880f668b <dfe8224c9c7a43d356eb9f74b06868aa05f90223; version=f8cce2ff3c04361b8843d8489620fda8880f668b <ed42ee1ed05ff2f4c36938379057413a40c56680

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
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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