Vulnerability-Lookup

GHSA-H675-FR46-XMW3

Vulnerability from github – Published: 2025-07-09 12:31 – Updated: 2025-11-19 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write

memcg_path_store() assigns a newly allocated memory buffer to filter->memcg_path, without deallocating the previously allocated and assigned memory buffer. As a result, users can leak kernel memory by continuously writing a data to memcg_path DAMOS sysfs file. Fix the leak by deallocating the previously set memory buffer.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38258"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-09T11:15:28Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter-\u003ememcg_path on write\n\nmemcg_path_store() assigns a newly allocated memory buffer to\nfilter-\u003ememcg_path, without deallocating the previously allocated and\nassigned memory buffer.  As a result, users can leak kernel memory by\ncontinuously writing a data to memcg_path DAMOS sysfs file.  Fix the leak\nby deallocating the previously set memory buffer.",
  "id": "GHSA-h675-fr46-xmw3",
  "modified": "2025-11-19T21:31:15Z",
  "published": "2025-07-09T12:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38258"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/490a43d07f1663d827e802720d30cbc0494e4f81"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a158ac0538dd5695eeaa00aa0720d711f3e4ef1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f489fe6afb395dbc79840efa3c05440b760d883"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5d5b0047b0c0f304608f3824139f7bd34c48413"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-38258 (GCVE-0-2025-38258)

Vulnerability from cvelistv5 – Published: 2025-07-09 10:42 – Updated: 2026-05-11 21:24

Title

mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write

Summary

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write memcg_path_store() assigns a newly allocated memory buffer to filter->memcg_path, without deallocating the previously allocated and assigned memory buffer. As a result, users can leak kernel memory by continuously writing a data to memcg_path DAMOS sysfs file. Fix the leak by deallocating the previously set memory buffer.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/490a43d07f1663d82…
https://git.kernel.org/stable/c/c5d5b0047b0c0f304…
https://git.kernel.org/stable/c/4a158ac0538dd5695…
https://git.kernel.org/stable/c/4f489fe6afb395dbc…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7ee161f18b5da5170b5d6a51aace49d312099128 , < 490a43d07f1663d827e802720d30cbc0494e4f81 (git) Affected: 7ee161f18b5da5170b5d6a51aace49d312099128 , < c5d5b0047b0c0f304608f3824139f7bd34c48413 (git) Affected: 7ee161f18b5da5170b5d6a51aace49d312099128 , < 4a158ac0538dd5695eeaa00aa0720d711f3e4ef1 (git) Affected: 7ee161f18b5da5170b5d6a51aace49d312099128 , < 4f489fe6afb395dbc79840efa3c05440b760d883 (git)
Linux	Linux	Affected: 6.3 Unaffected: 0 , < 6.3 (semver) Unaffected: 6.6.96 , ≤ 6.6.* (semver) Unaffected: 6.12.36 , ≤ 6.12.* (semver) Unaffected: 6.15.5 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/damon/sysfs-schemes.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "490a43d07f1663d827e802720d30cbc0494e4f81",
              "status": "affected",
              "version": "7ee161f18b5da5170b5d6a51aace49d312099128",
              "versionType": "git"
            },
            {
              "lessThan": "c5d5b0047b0c0f304608f3824139f7bd34c48413",
              "status": "affected",
              "version": "7ee161f18b5da5170b5d6a51aace49d312099128",
              "versionType": "git"
            },
            {
              "lessThan": "4a158ac0538dd5695eeaa00aa0720d711f3e4ef1",
              "status": "affected",
              "version": "7ee161f18b5da5170b5d6a51aace49d312099128",
              "versionType": "git"
            },
            {
              "lessThan": "4f489fe6afb395dbc79840efa3c05440b760d883",
              "status": "affected",
              "version": "7ee161f18b5da5170b5d6a51aace49d312099128",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "mm/damon/sysfs-schemes.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.96",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.96",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter-\u003ememcg_path on write\n\nmemcg_path_store() assigns a newly allocated memory buffer to\nfilter-\u003ememcg_path, without deallocating the previously allocated and\nassigned memory buffer.  As a result, users can leak kernel memory by\ncontinuously writing a data to memcg_path DAMOS sysfs file.  Fix the leak\nby deallocating the previously set memory buffer."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:24:19.236Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter-\u003ememcg_path on write",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38258",
    "datePublished": "2025-07-09T10:42:35.000Z",
    "dateReserved": "2025-04-16T04:51:23.997Z",
    "dateUpdated": "2026-05-11T21:24:19.236Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-H675-FR46-XMW3

CVE-2025-38258 (GCVE-0-2025-38258)

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