github - ghsa-qhqr-659q-mhg7

GHSA-QHQR-659Q-MHG7

Vulnerability from github – Published: 2025-11-13 00:30 – Updated: 2025-11-13 00:30

Details

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

mount: handle NULL values in mnt_ns_release()

When calling in listmount() mnt_ns_release() may be passed a NULL pointer. Handle that case gracefully.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40195"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-12T22:15:46Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmount: handle NULL values in mnt_ns_release()\n\nWhen calling in listmount() mnt_ns_release() may be passed a NULL\npointer. Handle that case gracefully.",
  "id": "GHSA-qhqr-659q-mhg7",
  "modified": "2025-11-13T00:30:18Z",
  "published": "2025-11-13T00:30:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40195"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2d68f8a7379d9c61005e982600c61948d4d019bd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c7ca6a02f8f9549a438a08a23c6327580ecf3d6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99ae3e70a293834d0274c46a37120c71a24a4995"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-40195 (GCVE-0-2025-40195)

Vulnerability from cvelistv5 – Published: 2025-11-12 21:56 – Updated: 2025-12-01 06:19

Summary

In the Linux kernel, the following vulnerability has been resolved: mount: handle NULL values in mnt_ns_release() When calling in listmount() mnt_ns_release() may be passed a NULL pointer. Handle that case gracefully.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/2d68f8a7379d9c610…
	https://git.kernel.org/stable/c/99ae3e70a293834d0…
	https://git.kernel.org/stable/c/6c7ca6a02f8f9549a…

Impacted products

Vendor

Product

Version

Linux

Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2d68f8a7379d9c61005e982600c61948d4d019bd (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 99ae3e70a293834d0274c46a37120c71a24a4995 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6c7ca6a02f8f9549a438a08a23c6327580ecf3d6 (git)

Linux

Unaffected: 6.12.54 , ≤ 6.12.* (semver)
Unaffected: 6.17.4 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/namespace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2d68f8a7379d9c61005e982600c61948d4d019bd",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "99ae3e70a293834d0274c46a37120c71a24a4995",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "6c7ca6a02f8f9549a438a08a23c6327580ecf3d6",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/namespace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.54",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmount: handle NULL values in mnt_ns_release()\n\nWhen calling in listmount() mnt_ns_release() may be passed a NULL\npointer. Handle that case gracefully."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-01T06:19:55.764Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2d68f8a7379d9c61005e982600c61948d4d019bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/99ae3e70a293834d0274c46a37120c71a24a4995"
        },
        {
          "url": "https://git.kernel.org/stable/c/6c7ca6a02f8f9549a438a08a23c6327580ecf3d6"
        }
      ],
      "title": "mount: handle NULL values in mnt_ns_release()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40195",
    "datePublished": "2025-11-12T21:56:32.311Z",
    "dateReserved": "2025-04-16T07:20:57.178Z",
    "dateUpdated": "2025-12-01T06:19:55.764Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

GHSA-QHQR-659Q-MHG7

CVE-2025-40195 (GCVE-0-2025-40195)

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Sightings

Nomenclature