CVE-2024-39466

Kernel crash via unchecked SCM availability

Published Jun 25, 2024 · Updated May 11, 2026

NULL pointer dereference in the Qualcomm LMH thermal driver in Linux allows local users to crash the kernel during device probing. The lmh_probe function proceeds without confirming qcom_scm_is_available(), allowing later SCM operations to dereference unavailable service state. Reachability requires a Qualcomm LMH platform whose Secure Channel Manager service is unavailable when the driver probes; the reported consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.21%
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 Qualcomm LMH thermal driver in Linux allows local users to crash the kernel during device probing. The lmh_probe function proceeds without confirming qcom_scm_is_available(), allowing later SCM operations to dereference unavailable service state. Reachability requires a Qualcomm LMH platform whose Secure Channel Manager service is unavailable when the driver probes; the reported consequence is a kernel crash.

The record

CVE
CVE-2024-39466
Published
Jun 25, 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. Jun 25, 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

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=5.15
  2. Affected versionversion=53bca371cdf7addc1e93e1b99285b3d3935685ec <0a47ba94ec3d8f782b33e3d970cfcb769b962464
  3. Affected versionversion=53bca371cdf7addc1e93e1b99285b3d3935685ec <2226b145afa5e13cb60dbe77fb20fb0666a1caf3
  4. Affected versionversion=53bca371cdf7addc1e93e1b99285b3d3935685ec <560d69c975072974c11434ca6953891e74c1a665
  5. Affected versionversion=53bca371cdf7addc1e93e1b99285b3d3935685ec <aa1a0807b4a76b44fb6b58a7e9087cd4b18ab41b
  6. Affected versionversion=53bca371cdf7addc1e93e1b99285b3d3935685ec <d9d3490c48df572edefc0b64655259eefdcbb9be

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=53bca371cdf7addc1e93e1b99285b3d3935685ec <0a47ba94ec3d8f782b33e3d970cfcb769b962464; version=53bca371cdf7addc1e93e1b99285b3d3935685ec <2226b145afa5e13cb60dbe77fb20fb0666a1caf3; version=53bca371cdf7addc1e93e1b99285b3d3935685ec <560d69c975072974c11434ca6953891e74c1a665; version=53bca371cdf7addc1e93e1b99285b3d3935685ec <aa1a0807b4a76b44fb6b58a7e9087cd4b18ab41b; version=53bca371cdf7addc1e93e1b99285b3d3935685ec <d9d3490c48df572edefc0b64655259eefdcbb9be

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 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.

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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