CVE-2024-44937

Kernel crash via concurrent ACPI notification race

Published Aug 26, 2024 · Updated May 11, 2026

Race condition in the Linux kernel 6.8 through 6.10.4 allows local users to crash the kernel by triggering concurrent ACPI notifications. The intel-vbtn notify_handler() can run simultaneously on multiple CPU cores and register priv->switches_dev twice, producing a duplicate sysfs object and a null-pointer dereference. The demonstrated path requires local low-privilege access and a Dell Venue 7140 keyboard-undock event; no data disclosure or modification is reported.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux kernel 6.8 through 6.10.4 allows local users to crash the kernel by triggering concurrent ACPI notifications. The intel-vbtn notify_handler() can run simultaneously on multiple CPU cores and register priv->switches_dev twice, producing a duplicate sysfs object and a null-pointer dereference. The demonstrated path requires local low-privilege access and a Dell Venue 7140 keyboard-undock event; no data disclosure or modification is reported.

The record

CVE
CVE-2024-44937
Published
Aug 26, 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. Aug 26, 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=6.8
  2. Affected versionversion=e2ffcda1629012a2c1a3706432bc45fdc899a584 <5c9618a3b6ea94cf7bdff7702aca8bf2d777d97b
  3. Affected versionversion=e2ffcda1629012a2c1a3706432bc45fdc899a584 <e075c3b13a0a142dcd3151b25d29a24f31b7b640

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.8; version=e2ffcda1629012a2c1a3706432bc45fdc899a584 <5c9618a3b6ea94cf7bdff7702aca8bf2d777d97b; version=e2ffcda1629012a2c1a3706432bc45fdc899a584 <e075c3b13a0a142dcd3151b25d29a24f31b7b640

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.

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
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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