CVE-2024-50178

Kernel errors via preemptible CPU-ID lookup

Published Nov 8, 2024 · Updated May 11, 2026

Availability flaw in the Loongson3 CPU-frequency driver in Linux 6.11 allows local users to trigger kernel errors during driver probing. The do_service_request() routine calls smp_processor_id() from preemptible probe context instead of the raw accessor, triggering a kernel BUG diagnostic. Reachability requires Loongson3 hardware and the loongson3_cpufreq driver to be enabled; public records document no reliable crash or privilege gain.

CVSS severity5.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Availability flaw in the Loongson3 CPU-frequency driver in Linux 6.11 allows local users to trigger kernel errors during driver probing. The do_service_request() routine calls smp_processor_id() from preemptible probe context instead of the raw accessor, triggering a kernel BUG diagnostic. Reachability requires Loongson3 hardware and the loongson3_cpufreq driver to be enabled; public records document no reliable crash or privilege gain.

The record

CVE
CVE-2024-50178
Published
Nov 8, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 8, 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=6.11
  2. Affected versionversion=ccf51454145bffd98e31cdbe54a4262473c609e2 <2b7ec33e534f7a10033a5cf07794acf48b182bbe
  3. Affected versionversion=ccf51454145bffd98e31cdbe54a4262473c609e2 <2f78e4a6d2702ac03c2bf2ed3a0e344e1fa9f967

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.11; version=ccf51454145bffd98e31cdbe54a4262473c609e2 <2b7ec33e534f7a10033a5cf07794acf48b182bbe; version=ccf51454145bffd98e31cdbe54a4262473c609e2 <2f78e4a6d2702ac03c2bf2ed3a0e344e1fa9f967

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS: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

No sourced classifications are available.

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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