CVE-2024-26823

Local boot failure via skipped GIC ITS quirks

Published Apr 17, 2024 · Updated Aug 5, 2026

Availability failure in the Linux kernel allows local users to cause boot failure on affected ACPI-based ARM systems. The ACPI probe path bypasses the GIC ITS quirk table after refactoring, so affected hardware initializes without required errata workarounds. Exposure requires an ACPI-booted ARM platform with an affected GIC ITS quirk; HIP07 loses GICv4 functionality, and other systems can fail to boot.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Availability failure in the Linux kernel allows local users to cause boot failure on affected ACPI-based ARM systems. The ACPI probe path bypasses the GIC ITS quirk table after refactoring, so affected hardware initializes without required errata workarounds. Exposure requires an ACPI-booted ARM platform with an affected GIC ITS quirk; HIP07 loses GICv4 functionality, and other systems can fail to boot.

The record

CVE
CVE-2024-26823
Published
Apr 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=6.6
  2. Affected versionversion=9585a495ac936049dba141e8f9d99159ca06d46a <4c60c611441f1f1e5de8e00e98ee5a4970778a00
  3. Affected versionversion=9585a495ac936049dba141e8f9d99159ca06d46a <8b02da04ad978827e5ccd675acf170198f747a7a
  4. Affected versionversion=9585a495ac936049dba141e8f9d99159ca06d46a <91a80fff3eeed928b6fba21271f6a9719b22a5d8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.6; version=9585a495ac936049dba141e8f9d99159ca06d46a <4c60c611441f1f1e5de8e00e98ee5a4970778a00; version=9585a495ac936049dba141e8f9d99159ca06d46a <8b02da04ad978827e5ccd675acf170198f747a7a; version=9585a495ac936049dba141e8f9d99159ca06d46a <91a80fff3eeed928b6fba21271f6a9719b22a5d8

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

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

T1499.004Endpoint Denial of Service: Application or System Exploitation

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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