CVE-2022-30784

Service interruption via oversized runlist allocation

Published May 26, 2022 · Updated Dec 2, 2025

Heap exhaustion in ntfs_get_attribute_value in NTFS-3G 2021.8.22 and earlier allows attackers to interrupt service via a crafted NTFS image. The function allocates and reads the final runlist extent at its declared length instead of limiting the operation to the validated attribute size, permitting malicious metadata to trigger excessive allocation. Exploitation requires local invocation of an affected tool or physical delivery of external storage, and the documented consequence for this flaw is memory exhaustion.

CVSS severity6.8
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap exhaustion in ntfs_get_attribute_value in NTFS-3G 2021.8.22 and earlier allows attackers to interrupt service via a crafted NTFS image. The function allocates and reads the final runlist extent at its declared length instead of limiting the operation to the validated attribute size, permitting malicious metadata to trigger excessive allocation. Exploitation requires local invocation of an affected tool or physical delivery of external storage, and the documented consequence for this flaw is memory exhaustion.

The record

CVE
CVE-2022-30784
Published
May 26, 2022
Updated
Dec 2, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, CWE-20, T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 26, 2022CVE publishedPublication date reported by the CVE source.
  2. Dec 2, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.8National Vulnerability DatabaseCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-20Improper Input Validation
T1200Hardware Additions

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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