CVE-2024-26747

Kernel crash via USB role-switch teardown race

Published Apr 3, 2024 · Updated May 23, 2026

NULL pointer dereference in affected Linux kernel releases allows local users with high privileges to crash the system via USB role-switch teardown. The USB role-switch class reacquires the parent driver module during release after the parent device can already be removed, causing a null dereference. Triggering the race requires local high-privilege access and a configured USB role-switch device; the bounded impact is a kernel crash and service interruption.

CVSS severity4.4
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 affected Linux kernel releases allows local users with high privileges to crash the system via USB role-switch teardown. The USB role-switch class reacquires the parent driver module during release after the parent device can already be removed, causing a null dereference. Triggering the race requires local high-privilege access and a configured USB role-switch device; the bounded impact is a kernel crash and service interruption.

The record

CVE
CVE-2024-26747
Published
Apr 3, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 3, 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

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=4.18.12 <4.19
  2. Affected versionversion=4.19
  3. Affected versionversion=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <0158216805ca7e498d07de38840d2732166ae5fa
  4. Affected versionversion=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <01f82de440f2ab07c259b7573371e1c42e5565db
  5. Affected versionversion=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <1c9be13846c0b2abc2480602f8ef421360e1ad9e
  6. Affected versionversion=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <4b45829440b1b208948b39cc71f77a37a2536734
  7. Affected versionversion=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <e279bf8e51893e1fe160b3d8126ef2dd00f661e1
  8. Affected versionversion=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <ef982fc41055fcebb361a92288d3225783d12913
  9. Affected versionversion=7b169e33a3bc9040e06988b2bc15e83d2af80358

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=4.18.12 <4.19; version=4.19; version=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <0158216805ca7e498d07de38840d2732166ae5fa; version=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <01f82de440f2ab07c259b7573371e1c42e5565db; version=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <1c9be13846c0b2abc2480602f8ef421360e1ad9e; version=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <4b45829440b1b208948b39cc71f77a37a2536734; version=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <e279bf8e51893e1fe160b3d8126ef2dd00f661e1; version=5c54fcac9a9de559b444ac63ec3cd82f1d157a0b <ef982fc41055fcebb361a92288d3225783d12913; version=7b169e33a3bc9040e06988b2bc15e83d2af80358

Published CVSS scores

4.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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