CVE-2022-50239

Kernel crash via read-only template write

Published Sep 15, 2025 · Updated Sep 15, 2025

A read-only-memory write in the Linux 5.7 Qualcomm cpufreq driver allows local users to crash the kernel during device probing. The qcom_cpufreq_krait_name_version path passes a string-literal template to snprintf, which overwrites read-only storage while substituting speed, PVS, and version values. Exposure is limited to systems using the affected Qualcomm Krait cpufreq path; the documented consequence is a kernel oops rather than code execution.

CVSS severity7.1
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A read-only-memory write in the Linux 5.7 Qualcomm cpufreq driver allows local users to crash the kernel during device probing. The qcom_cpufreq_krait_name_version path passes a string-literal template to snprintf, which overwrites read-only storage while substituting speed, PVS, and version values. Exposure is limited to systems using the affected Qualcomm Krait cpufreq path; the documented consequence is a kernel oops rather than code execution.

The record

CVE
CVE-2022-50239
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2025Record 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=5.7
  2. Affected versionversion=a8811ec764f95a04ba82f6f457e28c5e9e36e36b <01039fb8e90c9cb684430414bff70cea9eb168c5
  3. Affected versionversion=a8811ec764f95a04ba82f6f457e28c5e9e36e36b <14d260f94ff89543597ffea13db8b277a810e08e
  4. Affected versionversion=a8811ec764f95a04ba82f6f457e28c5e9e36e36b <794ded0bc461287a268bed21fea2eebb6e5d232c
  5. Affected versionversion=a8811ec764f95a04ba82f6f457e28c5e9e36e36b <b74ee4e301ca01e431e240c046173332966e2431

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.7; version=a8811ec764f95a04ba82f6f457e28c5e9e36e36b <01039fb8e90c9cb684430414bff70cea9eb168c5; version=a8811ec764f95a04ba82f6f457e28c5e9e36e36b <14d260f94ff89543597ffea13db8b277a810e08e; version=a8811ec764f95a04ba82f6f457e28c5e9e36e36b <794ded0bc461287a268bed21fea2eebb6e5d232c; version=a8811ec764f95a04ba82f6f457e28c5e9e36e36b <b74ee4e301ca01e431e240c046173332966e2431

Published CVSS scores

7.1UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

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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