CVE-2024-36893

Kernel crash via unchecked Type-C partner pointer

Published May 30, 2024 · Updated May 23, 2026

NULL pointer dereference in the USB Type-C TCPM subsystem in Linux allows local users to crash the kernel during partner setup. If typec_register_partner() fails, the TCPM state machine retains an error pointer or NULL in port->partner and dereferences it at multiple call sites. Reachability requires the affected TCPM code and a failed Type-C partner registration; the demonstrated consequence is a kernel crash, not data access or code execution.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the USB Type-C TCPM subsystem in Linux allows local users to crash the kernel during partner setup. If typec_register_partner() fails, the TCPM state machine retains an error pointer or NULL in port->partner and dereferences it at multiple call sites. Reachability requires the affected TCPM code and a failed Type-C partner registration; the demonstrated consequence is a kernel crash, not data access or code execution.

The record

CVE
CVE-2024-36893
Published
May 30, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 30, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=2897b36d2482b84f35e659989d5cb4501fb31ccd
  2. Affected versionversion=31220bd89c22a18478f52fcd8069e8e2adb8f4f2 <2a07e6f0ad8a6e504a3912cfe8dc859b7d0740a5
  3. Affected versionversion=5.15.132 <5.15.168
  4. Affected versionversion=6.1.53 <6.1.91
  5. Affected versionversion=6.4.16 <6.5
  6. Affected versionversion=6.5.3 <6.6
  7. Affected versionversion=6.6
  8. Affected versionversion=9b7cd3fe01f0d03cf5820b351a6be2a6e0a6da6f <d56d2ca03cc22123fd7626967d096d8661324e57
  9. Affected versionversion=c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 <789326cafbd1f67f424436b6bc8bdb887a364637
  10. Affected versionversion=c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 <ae11f04b452b5205536e1c02d31f8045eba249dd
  11. Affected versionversion=c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 <fc2b655cb6dd2b381f1f284989721002e39b6b77
  12. Affected versionversion=cbcf107780aecf51aba68488044a416d95060b6d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2897b36d2482b84f35e659989d5cb4501fb31ccd; version=31220bd89c22a18478f52fcd8069e8e2adb8f4f2 <2a07e6f0ad8a6e504a3912cfe8dc859b7d0740a5; version=5.15.132 <5.15.168; version=6.1.53 <6.1.91; version=6.4.16 <6.5; version=6.5.3 <6.6; version=6.6; version=9b7cd3fe01f0d03cf5820b351a6be2a6e0a6da6f <d56d2ca03cc22123fd7626967d096d8661324e57; version=c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 <789326cafbd1f67f424436b6bc8bdb887a364637; version=c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 <ae11f04b452b5205536e1c02d31f8045eba249dd; version=c97cd0b4b54eb42aed7f6c3c295a2d137f6d2416 <fc2b655cb6dd2b381f1f284989721002e39b6b77; version=cbcf107780aecf51aba68488044a416d95060b6d

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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