CVE-2024-37021

Local kernel crash via missing FPGA parent driver

Published Jun 24, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel FPGA manager allows local users to crash the kernel through a manager lookup. The manager lookup takes a module reference through the parent device driver's owner pointer without first ensuring that the parent has a driver. The path requires local low-privileged access and an FPGA manager registered beneath a driverless parent device, and its demonstrated consequence is host interruption.

CVSS severity5.5
Medium
EPSS probability0.21%
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 FPGA manager allows local users to crash the kernel through a manager lookup. The manager lookup takes a module reference through the parent device driver's owner pointer without first ensuring that the parent has a driver. The path requires local low-privileged access and an FPGA manager registered beneath a driverless parent device, and its demonstrated consequence is host interruption.

The record

CVE
CVE-2024-37021
Published
Jun 24, 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. Jun 24, 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=4.4
  2. Affected versionversion=654ba4cc0f3ed7c0f08bfb39f66059d8c42943ee <2da62a139a6221a345db4eb9f4f1c4b0937c89ad
  3. Affected versionversion=654ba4cc0f3ed7c0f08bfb39f66059d8c42943ee <304f8032d601d4f9322ca841cd0b573bd1beb158
  4. Affected versionversion=654ba4cc0f3ed7c0f08bfb39f66059d8c42943ee <4d4d2d4346857bf778fafaa97d6f76bb1663e3c9
  5. Affected versionversion=654ba4cc0f3ed7c0f08bfb39f66059d8c42943ee <62ac496a01c9337a11362cea427038ba621ca9eb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.4; version=654ba4cc0f3ed7c0f08bfb39f66059d8c42943ee <2da62a139a6221a345db4eb9f4f1c4b0937c89ad; version=654ba4cc0f3ed7c0f08bfb39f66059d8c42943ee <304f8032d601d4f9322ca841cd0b573bd1beb158; version=654ba4cc0f3ed7c0f08bfb39f66059d8c42943ee <4d4d2d4346857bf778fafaa97d6f76bb1663e3c9; version=654ba4cc0f3ed7c0f08bfb39f66059d8c42943ee <62ac496a01c9337a11362cea427038ba621ca9eb

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Canonical UbuntuCVSS: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 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.

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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