CVE-2022-49567

Local service interruption via uninitialized nodemask access

Published Feb 26, 2025 · Updated May 11, 2026

Use of an uninitialized resource in the Linux kernel allows local users to interrupt service during NUMA memory-policy rebinding. When mpol_set_nodemask converts an empty MPOL_PREFERRED policy to MPOL_LOCAL, it leaves pol->w.cpuset_mems_allowed uninitialized, and mpol_rebind_policy later reads that nodemask during cpuset task migration. Reaching the path requires a local account able to set a memory policy and initiate the relevant cgroup or cpuset rebinding; the documented impact is limited to availability.

CVSS severity5.5
Medium
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

Use of an uninitialized resource in the Linux kernel allows local users to interrupt service during NUMA memory-policy rebinding. When mpol_set_nodemask converts an empty MPOL_PREFERRED policy to MPOL_LOCAL, it leaves pol->w.cpuset_mems_allowed uninitialized, and mpol_rebind_policy later reads that nodemask during cpuset task migration. Reaching the path requires a local account able to set a memory policy and initiate the relevant cgroup or cpuset rebinding; the documented impact is limited to availability.

The record

CVE
CVE-2022-49567
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, T1499.004
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=5.14
  2. Affected versionversion=7858d7bca7fbbbbd5b940d2ec371b2d060b21b84 <018160ad314d75b1409129b2247b614a9f35894c
  3. Affected versionversion=7858d7bca7fbbbbd5b940d2ec371b2d060b21b84 <777e563f10e91e91130fe06bee85220d508e7b9b
  4. Affected versionversion=7858d7bca7fbbbbd5b940d2ec371b2d060b21b84 <8c5429a04ccd8dbcc3c753dab2f4126774ec28d4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=7858d7bca7fbbbbd5b940d2ec371b2d060b21b84 <018160ad314d75b1409129b2247b614a9f35894c; version=7858d7bca7fbbbbd5b940d2ec371b2d060b21b84 <777e563f10e91e91130fe06bee85220d508e7b9b; version=7858d7bca7fbbbbd5b940d2ec371b2d060b21b84 <8c5429a04ccd8dbcc3c753dab2f4126774ec28d4

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-908Use of Uninitialized Resource
T1499.004Application or System Exploitation

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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