CVE-2024-42230

Kernel crash via premature AIL disablement

Published Jul 30, 2024 · Updated May 11, 2026

Denial of service in Linux allows attackers to crash powerpc pseries systems via scv instructions during a kexec transition. The pseries kexec sequence disables AIL before secondary CPUs stop, so an scv interrupt from a still-running CPU enters at an unsupported real-mode vector and crashes the kernel. Triggering the transition requires CAP_SYS_BOOT and an affected powerpc pseries system with scv support; the consequence is a host crash during reboot.

CVSS severityUnavailable
Unscored
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux allows attackers to crash powerpc pseries systems via scv instructions during a kexec transition. The pseries kexec sequence disables AIL before secondary CPUs stop, so an scv interrupt from a still-running CPU enters at an unsupported real-mode vector and crashes the kernel. Triggering the transition requires CAP_SYS_BOOT and an affected powerpc pseries system with scv support; the consequence is a host crash during reboot.

The record

CVE
CVE-2024-42230
Published
Jul 30, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1529
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 30, 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=5.9
  2. Affected versionversion=7fa95f9adaee7e5cbb195d3359741120829e488b <21a741eb75f80397e5f7d3739e24d7d75e619011
  3. Affected versionversion=7fa95f9adaee7e5cbb195d3359741120829e488b <8c6506616386ce37e59b2745fc481c6713fae4f3
  4. Affected versionversion=7fa95f9adaee7e5cbb195d3359741120829e488b <c550679d604798d9fed8a5b2bb5693448a25407c
  5. Affected versionversion=7fa95f9adaee7e5cbb195d3359741120829e488b <d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=5.9; version=7fa95f9adaee7e5cbb195d3359741120829e488b <21a741eb75f80397e5f7d3739e24d7d75e619011; version=7fa95f9adaee7e5cbb195d3359741120829e488b <8c6506616386ce37e59b2745fc481c6713fae4f3; version=7fa95f9adaee7e5cbb195d3359741120829e488b <c550679d604798d9fed8a5b2bb5693448a25407c; version=7fa95f9adaee7e5cbb195d3359741120829e488b <d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5

Published CVSS scores

No CVSS assessment is available in this record.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1529System Shutdown/Reboot

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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