github - ghsa-x952-wmpf-82wc

ghsa-x952-wmpf-82wc

Vulnerability from github

Published

2025-09-07 18:31

Modified

2025-09-07 18:31

Details

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

mm: swap: fix potential buffer overflow in setup_clusters()

In setup_swap_map(), we only ensure badpages are in range (0, last_page]. As maxpages might be < last_page, setup_clusters() will encounter a buffer overflow when a badpage is >= maxpages.

Only call inc_cluster_info_page() for badpage which is < maxpages to fix the issue.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39727"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-07T16:15:46Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: swap: fix potential buffer overflow in setup_clusters()\n\nIn setup_swap_map(), we only ensure badpages are in range (0, last_page]. \nAs maxpages might be \u003c last_page, setup_clusters() will encounter a buffer\noverflow when a badpage is \u003e= maxpages.\n\nOnly call inc_cluster_info_page() for badpage which is \u003c maxpages to fix\nthe issue.",
  "id": "GHSA-x952-wmpf-82wc",
  "modified": "2025-09-07T18:31:26Z",
  "published": "2025-09-07T18:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39727"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/152c1339dc13ad46f1b136e8693de15980750835"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/815c528b13f2bb9b3130c13bedeabf2351a68129"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91b370800b3f2b3dda244c0ab06719c4971190a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-39727 (GCVE-0-2025-39727)

Vulnerability from cvelistv5

Published

2025-09-07 15:16

Modified

2025-09-29 05:58

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: mm: swap: fix potential buffer overflow in setup_clusters() In setup_swap_map(), we only ensure badpages are in range (0, last_page]. As maxpages might be < last_page, setup_clusters() will encounter a buffer overflow when a badpage is >= maxpages. Only call inc_cluster_info_page() for badpage which is < maxpages to fix the issue.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/91b370800b3f2b3dda244c0ab06719c4971190a5
	https://git.kernel.org/stable/c/9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799
	https://git.kernel.org/stable/c/815c528b13f2bb9b3130c13bedeabf2351a68129
	https://git.kernel.org/stable/c/152c1339dc13ad46f1b136e8693de15980750835

Impacted products

Vendor

Product

Version

▼

Linux

Version: b843786b0bd01ced7fcdbf3b033d68db2f7c61b2
Version: b843786b0bd01ced7fcdbf3b033d68db2f7c61b2
Version: b843786b0bd01ced7fcdbf3b033d68db2f7c61b2
Version: b843786b0bd01ced7fcdbf3b033d68db2f7c61b2

Linux

Version: 6.12

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/swapfile.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "91b370800b3f2b3dda244c0ab06719c4971190a5",
              "status": "affected",
              "version": "b843786b0bd01ced7fcdbf3b033d68db2f7c61b2",
              "versionType": "git"
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            {
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              "status": "affected",
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              "versionType": "git"
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              "versionType": "git"
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "version": "6.12"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
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              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.10",
              "versionType": "semver"
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            {
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
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                  "vulnerable": true
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                {
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: swap: fix potential buffer overflow in setup_clusters()\n\nIn setup_swap_map(), we only ensure badpages are in range (0, last_page]. \nAs maxpages might be \u003c last_page, setup_clusters() will encounter a buffer\noverflow when a badpage is \u003e= maxpages.\n\nOnly call inc_cluster_info_page() for badpage which is \u003c maxpages to fix\nthe issue."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-29T05:58:13.176Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "title": "mm: swap: fix potential buffer overflow in setup_clusters()",
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    "datePublished": "2025-09-07T15:16:17.986Z",
    "dateReserved": "2025-04-16T07:20:57.118Z",
    "dateUpdated": "2025-09-29T05:58:13.176Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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