CVE-2026-46241

Kernel-memory corruption via incomplete probe cleanup

Published May 28, 2026 · Updated May 28, 2026

Use-after-free in the MPC52xx SPI controller driver in Linux Kernel allows local users to corrupt kernel memory after probe failure. The mpc52xx_spi_probe() registration-error path continues into cleanup without freeing irq0 and irq1 or synchronously canceling queued work, leaving callbacks able to access freed driver state. The condition requires local access, the affected driver, an MPC52xx SPI controller, and controller-registration failure; interrupt resources also remain leaked.

CVSS severity7.8
High
EPSS probability0.13%
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 MPC52xx SPI controller driver in Linux Kernel allows local users to corrupt kernel memory after probe failure. The mpc52xx_spi_probe() registration-error path continues into cleanup without freeing irq0 and irq1 or synchronously canceling queued work, leaving callbacks able to access freed driver state. The condition requires local access, the affected driver, an MPC52xx SPI controller, and controller-registration failure; interrupt resources also remain leaked.

The record

CVE
CVE-2026-46241
Published
May 28, 2026
Updated
May 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 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=2.6.33
  2. Affected versionversion=42bbb70980f3720b0ae6da6af862af0e95a04351 <336d9ad7560b3baba17af06727a888040ee93390
  3. Affected versionversion=42bbb70980f3720b0ae6da6af862af0e95a04351 <5c77f11b9b5f1ad5a704dad875260c44016ede10
  4. Affected versionversion=42bbb70980f3720b0ae6da6af862af0e95a04351 <8b49b6aadd0c622ca7d68b4a53ae10362e221cf3
  5. Affected versionversion=42bbb70980f3720b0ae6da6af862af0e95a04351 <f62c060272b9d7423b1650b844e8e4e7b8f9f925

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=2.6.33; version=42bbb70980f3720b0ae6da6af862af0e95a04351 <336d9ad7560b3baba17af06727a888040ee93390; version=42bbb70980f3720b0ae6da6af862af0e95a04351 <5c77f11b9b5f1ad5a704dad875260c44016ede10; version=42bbb70980f3720b0ae6da6af862af0e95a04351 <8b49b6aadd0c622ca7d68b4a53ae10362e221cf3; version=42bbb70980f3720b0ae6da6af862af0e95a04351 <f62c060272b9d7423b1650b844e8e4e7b8f9f925

Published CVSS scores

7.8NIST NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
T1068Exploitation for Privilege Escalation

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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