CVE-2024-46719

Local kernel crash via unchecked NULL alternate mode

Published Sep 18, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel allows local users to crash the kernel during UCSI DisplayPort alternate-mode tracing. When CONFIG_TYPEC_DP_ALTMODE is disabled, ucsi_register_displayport returns NULL; ucsi_register_altmode accepts it because it checks only IS_ERR, and the trace path dereferences it. Reachability requires the UCSI DisplayPort alternate-mode registration path in that configuration, and the reported impact is a local kernel crash.

CVSS severity5.5
Medium
EPSS probability0.24%
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 Linux kernel allows local users to crash the kernel during UCSI DisplayPort alternate-mode tracing. When CONFIG_TYPEC_DP_ALTMODE is disabled, ucsi_register_displayport returns NULL; ucsi_register_altmode accepts it because it checks only IS_ERR, and the trace path dereferences it. Reachability requires the UCSI DisplayPort alternate-mode registration path in that configuration, and the reported impact is a local kernel crash.

The record

CVE
CVE-2024-46719
Published
Sep 18, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 18, 2024CVE 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=5.2
  2. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <3aa56313b0de06ce1911950b2cc0c269614a87a9
  3. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <3b9f2d9301ae67070fe77a0c06758722fd7172b7
  4. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <7e64cabe81c303bdf6fd26b6a09a3289b33bc870
  5. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <8095bf0579ed4906a33f7bec675bfb29b6b16a3b
  6. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <99331fe68a8eaa4097143a33fb0c12d5e5e8e830
  7. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <99516f76db48e1a9d54cdfed63c1babcee4e71a5
  8. Affected versionversion=af8622f6a585d8d82b11cd7987e082861fd0edd3 <b4243c05d7e3db0bdbf9124e6fa59b4ca7c807ae

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.2; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <3aa56313b0de06ce1911950b2cc0c269614a87a9; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <3b9f2d9301ae67070fe77a0c06758722fd7172b7; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <7e64cabe81c303bdf6fd26b6a09a3289b33bc870; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <8095bf0579ed4906a33f7bec675bfb29b6b16a3b; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <99331fe68a8eaa4097143a33fb0c12d5e5e8e830; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <99516f76db48e1a9d54cdfed63c1babcee4e71a5; version=af8622f6a585d8d82b11cd7987e082861fd0edd3 <b4243c05d7e3db0bdbf9124e6fa59b4ca7c807ae

Published CVSS scores

5.5NVDCVSS: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

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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)
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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