CVE-2022-49750

Service interruption via wrapped CPPC calculations

Published Mar 27, 2025 · Updated May 11, 2026

Integer overflow in the Linux kernel CPPC CPUFreq driver allows local users to interrupt service during frequency calculations. In drivers/cpufreq/cppc_cpufreq.c, arithmetic on unsigned 32-bit _CPC fields occurs before widening, allowing intermediate calculations to wrap instead of preserving the full result. Reachability requires local low-privilege access and a system whose firmware exposes the affected CPPC path; public records do not identify whether the result is a hang, crash, or reboot.

CVSS severity5.5
Medium
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

Integer overflow in the Linux kernel CPPC CPUFreq driver allows local users to interrupt service during frequency calculations. In drivers/cpufreq/cppc_cpufreq.c, arithmetic on unsigned 32-bit _CPC fields occurs before widening, allowing intermediate calculations to wrap instead of preserving the full result. Reachability requires local low-privilege access and a system whose firmware exposes the affected CPPC path; public records do not identify whether the result is a hang, crash, or reboot.

The record

CVE
CVE-2022-49750
Published
Mar 27, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-190, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 27, 2025CVE 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=740fcdc2c20ecf855b36b919d7fa1b872b5a7eae <7d596bbc66a52ff2c7a83d7e0ee840cb07e2a045
  3. Affected versionversion=740fcdc2c20ecf855b36b919d7fa1b872b5a7eae <f5f94b9c8b805d87ff185caf9779c3a4d07819e3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=740fcdc2c20ecf855b36b919d7fa1b872b5a7eae <7d596bbc66a52ff2c7a83d7e0ee840cb07e2a045; version=740fcdc2c20ecf855b36b919d7fa1b872b5a7eae <f5f94b9c8b805d87ff185caf9779c3a4d07819e3

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.

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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

CWE-190Integer Overflow or Wraparound
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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