CVE-2025-37994

Kernel crash via unsynchronized DisplayPort partner removal

Published May 29, 2025 · Updated May 11, 2026

A NULL pointer dereference in affected Linux kernels allows local users to crash the kernel during UCSI DisplayPort partner removal. ucsi_displayport_remove_partner clears partner state without synchronously canceling dp->work, allowing queued work to access the removed partner. Triggering requires high local privileges and UCSI DisplayPort-capable hardware during partner teardown; the bounded impact is a kernel crash.

CVSS severity6.4
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A NULL pointer dereference in affected Linux kernels allows local users to crash the kernel during UCSI DisplayPort partner removal. ucsi_displayport_remove_partner clears partner state without synchronously canceling dp->work, allowing queued work to access the removed partner. Triggering requires high local privileges and UCSI DisplayPort-capable hardware during partner teardown; the bounded impact is a kernel crash.

The record

CVE
CVE-2025-37994
Published
May 29, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 29, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.2
  2. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <076ab0631ed4928905736f1701e25f1e722bc086
  3. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <14f298c52188c34acde9760bf5abc669c5c36fdb
  4. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <312d79669e71283d05c05cc49a1a31e59e3d9e0e
  5. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <5ad298d6d4aebe1229adba6427e417e89a5208d8
  6. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <7804c4d63edfdd5105926cc291e806e8f4ce01b5
  7. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <9dda1e2a666a8a32ce0f153b5dee05c7351f1020
  8. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <a9931f1b52b2d0bf3952e003fd5901ea7eb851ed
  9. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <e9b63faf5c97deb43fc39a52edbc39d626cc14bf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=5.2; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <076ab0631ed4928905736f1701e25f1e722bc086; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <14f298c52188c34acde9760bf5abc669c5c36fdb; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <312d79669e71283d05c05cc49a1a31e59e3d9e0e; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <5ad298d6d4aebe1229adba6427e417e89a5208d8; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <7804c4d63edfdd5105926cc291e806e8f4ce01b5; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <9dda1e2a666a8a32ce0f153b5dee05c7351f1020; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <a9931f1b52b2d0bf3952e003fd5901ea7eb851ed; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <e9b63faf5c97deb43fc39a52edbc39d626cc14bf

Published CVSS scores

6.4OracleCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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