CVE-2024-56682

Kernel crash via missing parent MSI domain

Published Dec 28, 2024 · Updated May 11, 2026

NULL pointer dereference in the RISC-V APLIC interrupt controller in Linux 6.10 through 6.12.1 allows local users to crash the kernel. When APLIC probes before IMSIC, its probe path passes a missing parent MSI domain to msi_create_device_irq_domain(), which dereferences it. The issue requires a RISC-V system using APLIC and IMSIC with the affected probe order; exploitation interrupts service without reported data disclosure or modification.

CVSS severity5.5
Medium
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

NULL pointer dereference in the RISC-V APLIC interrupt controller in Linux 6.10 through 6.12.1 allows local users to crash the kernel. When APLIC probes before IMSIC, its probe path passes a missing parent MSI domain to msi_create_device_irq_domain(), which dereferences it. The issue requires a RISC-V system using APLIC and IMSIC with the affected probe order; exploitation interrupts service without reported data disclosure or modification.

The record

CVE
CVE-2024-56682
Published
Dec 28, 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. Dec 28, 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=6.10
  2. Affected versionversion=ca8df97fe6798afbe395fc4a8e23bac0c7fbd248 <1f181d1cda56c2fbe379c5ace1aa1fac6306669e
  3. Affected versionversion=ca8df97fe6798afbe395fc4a8e23bac0c7fbd248 <285a07810ab3bcedc2bd380ebacbf6b4942a889a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.10; version=ca8df97fe6798afbe395fc4a8e23bac0c7fbd248 <1f181d1cda56c2fbe379c5ace1aa1fac6306669e; version=ca8df97fe6798afbe395fc4a8e23bac0c7fbd248 <285a07810ab3bcedc2bd380ebacbf6b4942a889a

Published CVSS scores

5.7SUSECVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS: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

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.

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Technologies

Your stack

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Your stack

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