CVE-2024-26866

Kernel crash via LPSPI probe use-after-free

Published Apr 17, 2024 · Updated May 11, 2026

Use-after-free in the LPSPI controller probe path in Linux allows local users to crash the kernel through a probe error. fsl_lpspi_probe() manually drops the SPI controller with spi_controller_put() after devm_spi_register_controller() succeeds, leaving device-managed cleanup to call spi_unregister_controller() on freed memory. Exploitation requires local low-privileged access and an LPSPI device whose probe fails after registration; the documented result is a NULL-pointer kernel crash.

CVSS severity5.5
Medium
EPSS probability0.22%
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 the LPSPI controller probe path in Linux allows local users to crash the kernel through a probe error. fsl_lpspi_probe() manually drops the SPI controller with spi_controller_put() after devm_spi_register_controller() succeeds, leaving device-managed cleanup to call spi_unregister_controller() on freed memory. Exploitation requires local low-privileged access and an LPSPI device whose probe fails after registration; the documented result is a NULL-pointer kernel crash.

The record

CVE
CVE-2024-26866
Published
Apr 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 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=4.10
  2. Affected versionversion=5314987de5e5f5e38436ef4a69328bc472bbd63e <1543418e82789cc383cd36d41469983c64e3fc7f
  3. Affected versionversion=5314987de5e5f5e38436ef4a69328bc472bbd63e <2ae0ab0143fcc06190713ed81a6486ed0ad3c861
  4. Affected versionversion=5314987de5e5f5e38436ef4a69328bc472bbd63e <996ce839606afd0fef91355627868022aa73eb68
  5. Affected versionversion=5314987de5e5f5e38436ef4a69328bc472bbd63e <da83ed350e4604b976e94239b08d8e2e7eaee7ea

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.10; version=5314987de5e5f5e38436ef4a69328bc472bbd63e <1543418e82789cc383cd36d41469983c64e3fc7f; version=5314987de5e5f5e38436ef4a69328bc472bbd63e <2ae0ab0143fcc06190713ed81a6486ed0ad3c861; version=5314987de5e5f5e38436ef4a69328bc472bbd63e <996ce839606afd0fef91355627868022aa73eb68; version=5314987de5e5f5e38436ef4a69328bc472bbd63e <da83ed350e4604b976e94239b08d8e2e7eaee7ea

Published CVSS scores

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

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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
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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