CVE-2024-50150

Kernel crash via missing altmode parent reference

Published Nov 7, 2024 · Updated Aug 5, 2026

Use-after-free in USB Type-C altmode handling in Linux allows local users to crash the kernel during device release. typec_altmode_release dereferences its parent device after registration fails to retain a parent reference, allowing the parent to be freed first. The trigger requires local access and Type-C altmode teardown; Siemens lists all SIMATIC S7-1500 TM MFP GNU/Linux subsystem versions as affected.

CVSS severity7.8
High
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

Use-after-free in USB Type-C altmode handling in Linux allows local users to crash the kernel during device release. typec_altmode_release dereferences its parent device after registration fails to retain a parent reference, allowing the parent to be freed first. The trigger requires local access and Type-C altmode teardown; Siemens lists all SIMATIC S7-1500 TM MFP GNU/Linux subsystem versions as affected.

The record

CVE
CVE-2024-50150
Published
Nov 7, 2024
Updated
Aug 5, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-416, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 7, 2024CVE 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=0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=4.19; version=8a37d87d72f0c69f837229c04d2fcd7117ea57e7 <1ded6b12499e6dee9b0e1ceac633be36538f6fc2; version=8a37d87d72f0c69f837229c04d2fcd7117ea57e7 <2b0b33e8a58388fa9078f0fbe9af1900e6b08879; version=8a37d87d72f0c69f837229c04d2fcd7117ea57e7 <2c15c4133d00f5da632fce60ed013fc31aa9aa58; version=8a37d87d72f0c69f837229c04d2fcd7117ea57e7 <68a7c7fe322546be1464174c8d85874b8161deda; version=8a37d87d72f0c69f837229c04d2fcd7117ea57e7 <6af43ec3bf40f8b428d9134ffa7a291aecd60da8; version=8a37d87d72f0c69f837229c04d2fcd7117ea57e7 <87474406056891e4fdea0794e1f632b21b3dfa27; version=8a37d87d72f0c69f837229c04d2fcd7117ea57e7 <bee1b68cb8bcee4fd3a8bde3a4886e0b1375dc4d; version=8a37d87d72f0c69f837229c04d2fcd7117ea57e7 <befab3a278c59db0cc88c8799638064f6d3fd6f8

Published CVSS scores

7.8Siemens ProductCERTCVSS: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.

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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-416Use After Free
T1499.004Application or System Exploitation

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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