CVE-2022-49145

Memory disclosure and crash via short _CPC package

Published Feb 26, 2025 · Updated May 11, 2026

Out-of-bounds read in Linux kernel ACPI CPPC code allows local users to disclose kernel memory or crash the system through malformed _CPC data. The parser trusts NumEntries and reads the Revision element at index 1 even when the firmware-returned package contains fewer than two entries. Reachability requires a platform that supplies the short package; the bounded consequences are kernel-memory disclosure and service interruption.

CVSS severity7.1
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Linux kernel ACPI CPPC code allows local users to disclose kernel memory or crash the system through malformed _CPC data. The parser trusts NumEntries and reads the Revision element at index 1 even when the firmware-returned package contains fewer than two entries. Reachability requires a platform that supplies the short package; the bounded consequences are kernel-memory disclosure and service interruption.

The record

CVE
CVE-2022-49145
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 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=337aadff8e4567e39669e07d9a88b789d78458b5 <28d5387c1994f5e1e0d41b30a1f3dd6e1f609252
  2. Affected versionversion=337aadff8e4567e39669e07d9a88b789d78458b5 <40d8abf364bcab23bc715a9221a3c8623956257b
  3. Affected versionversion=337aadff8e4567e39669e07d9a88b789d78458b5 <97b5593fd1b182b3fdb180b6bbe64ec09669988b
  4. Affected versionversion=337aadff8e4567e39669e07d9a88b789d78458b5 <b3f15609ffa521de12244cd6af24002030dda3f5
  5. Affected versionversion=337aadff8e4567e39669e07d9a88b789d78458b5 <b80b19b32a432c9eee1cd200ef7aaddf608f54d1
  6. Affected versionversion=337aadff8e4567e39669e07d9a88b789d78458b5 <cb249f8c00f40dba83b7da8207ac14ca46e9ec9e
  7. Affected versionversion=337aadff8e4567e39669e07d9a88b789d78458b5 <d208ea44e25b31db5a4d5e8c31df51787a3e9303
  8. Affected versionversion=337aadff8e4567e39669e07d9a88b789d78458b5 <d7339f2a3938fb56b5f28d53f5345900b5fa0e74
  9. Affected versionversion=337aadff8e4567e39669e07d9a88b789d78458b5 <e5b681822cac1f8093759b02e16c06b2c64b6788
  10. Affected versionversion=4.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=337aadff8e4567e39669e07d9a88b789d78458b5 <28d5387c1994f5e1e0d41b30a1f3dd6e1f609252; version=337aadff8e4567e39669e07d9a88b789d78458b5 <40d8abf364bcab23bc715a9221a3c8623956257b; version=337aadff8e4567e39669e07d9a88b789d78458b5 <97b5593fd1b182b3fdb180b6bbe64ec09669988b; version=337aadff8e4567e39669e07d9a88b789d78458b5 <b3f15609ffa521de12244cd6af24002030dda3f5; version=337aadff8e4567e39669e07d9a88b789d78458b5 <b80b19b32a432c9eee1cd200ef7aaddf608f54d1; version=337aadff8e4567e39669e07d9a88b789d78458b5 <cb249f8c00f40dba83b7da8207ac14ca46e9ec9e; version=337aadff8e4567e39669e07d9a88b789d78458b5 <d208ea44e25b31db5a4d5e8c31df51787a3e9303; version=337aadff8e4567e39669e07d9a88b789d78458b5 <d7339f2a3938fb56b5f28d53f5345900b5fa0e74; version=337aadff8e4567e39669e07d9a88b789d78458b5 <e5b681822cac1f8093759b02e16c06b2c64b6788; version=4.4

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
5.5Amazon LinuxCVSS: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-125Out-of-bounds Read

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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