CVE-2025-37903

Kernel code execution via dangling HDCP connector

Published May 20, 2025 · Updated Aug 5, 2026

Use-after-free in the AMD display HDCP code in affected Linux kernels allows local users to execute code with kernel privileges. amdgpu_dm_hdcp.c retains amdgpu_dm_connector pointers without taking kref references, so dock removal frees objects that HDCP later dereferences. An unprivileged local account on a Raven-or-later AMD GPU system can reach the path during USB-C MST dock topology changes, causing a graphics failure, kernel panic, or kernel code execution.

CVSS severity5.4
Medium
EPSS probability0.19%
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 the AMD display HDCP code in affected Linux kernels allows local users to execute code with kernel privileges. amdgpu_dm_hdcp.c retains amdgpu_dm_connector pointers without taking kref references, so dock removal frees objects that HDCP later dereferences. An unprivileged local account on a Raven-or-later AMD GPU system can reach the path during USB-C MST dock topology changes, causing a graphics failure, kernel panic, or kernel code execution.

The record

CVE
CVE-2025-37903
Published
May 20, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.5
  2. Affected versionversion=da3fd7ac0bcf372cc57117bdfcd725cca7ef975a <3a782a83d130ceac6c98a87639ddd89640bff486
  3. Affected versionversion=da3fd7ac0bcf372cc57117bdfcd725cca7ef975a <bbc66abcd297be67e3d835276e21e6fdc65205a6
  4. Affected versionversion=da3fd7ac0bcf372cc57117bdfcd725cca7ef975a <be593d9d91c5a3a363d456b9aceb71029aeb3f1d
  5. Affected versionversion=da3fd7ac0bcf372cc57117bdfcd725cca7ef975a <dd329f04dda35a66e0c9ed462ba91bd5f2c8be70
  6. Affected versionversion=da3fd7ac0bcf372cc57117bdfcd725cca7ef975a <e25139c4aa5621f2db8e86688c33546cdd885e42

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.5; version=da3fd7ac0bcf372cc57117bdfcd725cca7ef975a <3a782a83d130ceac6c98a87639ddd89640bff486; version=da3fd7ac0bcf372cc57117bdfcd725cca7ef975a <bbc66abcd297be67e3d835276e21e6fdc65205a6; version=da3fd7ac0bcf372cc57117bdfcd725cca7ef975a <be593d9d91c5a3a363d456b9aceb71029aeb3f1d; version=da3fd7ac0bcf372cc57117bdfcd725cca7ef975a <dd329f04dda35a66e0c9ed462ba91bd5f2c8be70; version=da3fd7ac0bcf372cc57117bdfcd725cca7ef975a <e25139c4aa5621f2db8e86688c33546cdd885e42

Published CVSS scores

5.4UbuntuCVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

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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