CVE-2022-47022

Process crash via unchecked CPU-set allocation

Published Aug 22, 2023 · Updated Oct 3, 2024

Null pointer dereference in Open MPI hwloc 2.1.0 through 2.9.2 allows local users to crash a process during CPU binding. Linux binding routines pass the unchecked result of CPU_ALLOC to CPU_ZERO_S, dereferencing a null glibc CPU-set pointer after allocation failure. Triggering the crash requires local access to an affected binding operation and an allocation failure; no data disclosure or modification is reported.

CVSS severity4.7
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in Open MPI hwloc 2.1.0 through 2.9.2 allows local users to crash a process during CPU binding. Linux binding routines pass the unchecked result of CPU_ALLOC to CPU_ZERO_S, dereferencing a null glibc CPU-set pointer after allocation failure. Triggering the crash requires local access to an affected binding operation and an allocation failure; no data disclosure or modification is reported.

The record

CVE
CVE-2022-47022
Published
Aug 22, 2023
Updated
Oct 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.7NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.0Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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