Vulnerability-Lookup

CVE-2025-65947 (GCVE-0-2025-65947)

Vulnerability from cvelistv5 – Published: 2025-11-21 22:15 – Updated: 2025-11-24 14:56

Title

thread-amount is Vulnerable to Resource Exhaustion (Memory and Handle Leaks) on Windows and macOS

Summary

thread-amount is a tool that gets the amount of threads in the current process. Prior to version 0.2.2, there are resource leaks when querying thread counts on Windows and Apple platforms. In Windows platforms, the thread_amount function calls CreateToolhelp32Snapshot but fails to close the returned HANDLE using CloseHandle. Repeated calls to this function will cause the handle count of the process to grow indefinitely, eventually leading to system instability or process termination when the handle limit is reached. In Apple platforms, the thread_amount function calls task_threads (via Mach kernel APIs) which allocates memory for the thread list. The function fails to deallocate this memory using vm_deallocate. Repeated calls will result in a steady memory leak, eventually causing the process to be killed by the OOM (Out of Memory) killer. This issue has been patched in version 0.2.2.

Severity ?

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-772 - Missing Release of Resource after Effective Lifetime

Assigner

GitHub_M

References

URL

Tags

	https://github.com/jzeuzs/thread-amount/security/…	x_refsource_CONFIRM
	https://github.com/jzeuzs/thread-amount/pull/29	x_refsource_MISC
	https://github.com/jzeuzs/thread-amount/commit/28…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	jzeuzs	thread-amount	Affected: < 0.2.2

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2025-65947

Vulnerability from fkie_nvd - Published: 2025-11-21 23:15 - Updated: 2025-11-25 22:16

Severity ?

8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/jzeuzs/thread-amount/commit/28860d4a38286609cb884c13b5b7941edc2390e5
	security-advisories@github.com	https://github.com/jzeuzs/thread-amount/pull/29
	security-advisories@github.com	https://github.com/jzeuzs/thread-amount/security/advisories/GHSA-jf9p-2fv9-2jp2

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "thread-amount is a tool that gets the amount of threads in the current process. Prior to version 0.2.2, there are resource leaks when querying thread counts on Windows and Apple platforms. In Windows platforms, the thread_amount function calls CreateToolhelp32Snapshot but fails to close the returned HANDLE using CloseHandle. Repeated calls to this function will cause the handle count of the process to grow indefinitely, eventually leading to system instability or process termination when the handle limit is reached. In Apple platforms, the thread_amount function calls task_threads (via Mach kernel APIs) which allocates memory for the thread list. The function fails to deallocate this memory using vm_deallocate. Repeated calls will result in a steady memory leak, eventually causing the process to be killed by the OOM (Out of Memory) killer. This issue has been patched in version 0.2.2."
    }
  ],
  "id": "CVE-2025-65947",
  "lastModified": "2025-11-25T22:16:42.557",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
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        },
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        "type": "Secondary"
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  "published": "2025-11-21T23:15:45.373",
  "references": [
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      "url": "https://github.com/jzeuzs/thread-amount/commit/28860d4a38286609cb884c13b5b7941edc2390e5"
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GHSA-JF9P-2FV9-2JP2

Vulnerability from github – Published: 2025-11-21 18:19 – Updated: 2025-11-27 07:53

Summary

thread-amount Vulnerable to Resource Exhaustion (Memory and Handle Leaks) on Windows and macOS

Details

Affected versions of this crate contain resource leaks when querying thread counts on Windows and Apple platforms.

Windows

The thread_amount function calls CreateToolhelp32Snapshot but fails to close the returned HANDLE using CloseHandle. Repeated calls to this function will cause the handle count of the process to grow indefinitely, eventually leading to system instability or process termination when the handle limit is reached.

macOS / iOS

The thread_amount function calls task_threads (via Mach kernel APIs) which allocates memory for the thread list. The function fails to deallocate this memory using vm_deallocate. Repeated calls will result in a steady memory leak, eventually causing the process to be killed by the OOM (Out of Memory) killer.

Impact

Long-running applications (such as servers, daemons, or monitoring tools) that use this crate to periodically check thread counts will eventually crash due to resource exhaustion.

Resources

https://github.com/jzeuzs/thread-amount/pull/29

Severity ?

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "thread-amount"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-65947"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-772"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-11-21T18:19:40Z",
    "nvd_published_at": "2025-11-21T23:15:45Z",
    "severity": "HIGH"
  },
  "details": "Affected versions of this crate contain resource leaks when querying thread counts on Windows and Apple platforms.\n\n### Windows\nThe `thread_amount` function calls `CreateToolhelp32Snapshot` but fails to close the returned `HANDLE` using `CloseHandle`. Repeated calls to this function will cause the handle count of the process to grow indefinitely, eventually leading to system instability or process termination when the handle limit is reached.\n\n### macOS / iOS\nThe `thread_amount` function calls `task_threads` (via Mach kernel APIs) which allocates memory for the thread list. The function fails to deallocate this memory using `vm_deallocate`. Repeated calls will result in a steady memory leak, eventually causing the process to be killed by the OOM (Out of Memory) killer.\n\n### Impact\nLong-running applications (such as servers, daemons, or monitoring tools) that use this crate to periodically check thread counts will eventually crash due to resource exhaustion.\n\n### Resources\n\n- https://github.com/jzeuzs/thread-amount/pull/29",
  "id": "GHSA-jf9p-2fv9-2jp2",
  "modified": "2025-11-27T07:53:32Z",
  "published": "2025-11-21T18:19:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/jzeuzs/thread-amount/security/advisories/GHSA-jf9p-2fv9-2jp2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-65947"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jzeuzs/thread-amount/pull/29"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jzeuzs/thread-amount/commit/28860d4a38286609cb884c13b5b7941edc2390e5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jzeuzs/thread-amount"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2025-0125.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "thread-amount Vulnerable to Resource Exhaustion (Memory and Handle Leaks) on Windows and macOS"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2025-65947 (GCVE-0-2025-65947)

FKIE_CVE-2025-65947

GHSA-JF9P-2FV9-2JP2

Windows

macOS / iOS

Impact

Resources

Tags

Sightings

Nomenclature