CVE-2024-38622

Kernel crash via unconditional NULL callback invocation

Published Jun 21, 2024 · Updated May 11, 2026

NULL pointer dereference in Linux 5.19 and later allows local users to crash the kernel through the MSM DPU interrupt path. The dpu_core_irq_callback_handler() path checks the registered callback pointer for NULL but invokes it unconditionally after releasing the callback lock. Exploitation requires low-privileged local access and a system using the Qualcomm MSM display pipeline; the bounded consequence is a 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

NULL pointer dereference in Linux 5.19 and later allows local users to crash the kernel through the MSM DPU interrupt path. The dpu_core_irq_callback_handler() path checks the registered callback pointer for NULL but invokes it unconditionally after releasing the callback lock. Exploitation requires low-privileged local access and a system using the Qualcomm MSM display pipeline; the bounded consequence is a kernel crash.

The record

CVE
CVE-2024-38622
Published
Jun 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 21, 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=5.19
  2. Affected versionversion=c929ac60b3ed34accd25a052a4833e418900f466 <530f272053a5e72243a9cb07bb1296af6c346002
  3. Affected versionversion=c929ac60b3ed34accd25a052a4833e418900f466 <873f67699114452c2a996c4e10faac8ff860c241
  4. Affected versionversion=c929ac60b3ed34accd25a052a4833e418900f466 <9078630ed7f8f25d65d11823e7f2b11a8e2f4f0f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=c929ac60b3ed34accd25a052a4833e418900f466 <530f272053a5e72243a9cb07bb1296af6c346002; version=c929ac60b3ed34accd25a052a4833e418900f466 <873f67699114452c2a996c4e10faac8ff860c241; version=c929ac60b3ed34accd25a052a4833e418900f466 <9078630ed7f8f25d65d11823e7f2b11a8e2f4f0f

Published CVSS scores

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 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-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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