github - ghsa-3w4f-86g3-p6vp

ghsa-3w4f-86g3-p6vp

Vulnerability from github

Published

2025-07-09 12:31

Modified

2025-07-09 12:31

Details

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

userns and mnt_idmap leak in open_tree_attr(2)

Once want_mount_setattr() has returned a positive, it does require finish_mount_kattr() to release ->mnt_userns. Failing do_mount_setattr() does not change that.

As the result, we can end up leaking userns and possibly mnt_idmap as well.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38247"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-09T11:15:26Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nuserns and mnt_idmap leak in open_tree_attr(2)\n\nOnce want_mount_setattr() has returned a positive, it does require\nfinish_mount_kattr() to release -\u003emnt_userns.  Failing do_mount_setattr()\ndoes not change that.\n\nAs the result, we can end up leaking userns and possibly mnt_idmap as\nwell.",
  "id": "GHSA-3w4f-86g3-p6vp",
  "modified": "2025-07-09T12:31:34Z",
  "published": "2025-07-09T12:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38247"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0748e553df0225754c316a92af3a77fdc057b358"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/142db4e76110dd80239f4e79810f85ea1735ad60"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-38247 (GCVE-0-2025-38247)

Vulnerability from cvelistv5

Published

2025-07-09 10:42

Modified

2025-07-28 04:16

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: userns and mnt_idmap leak in open_tree_attr(2) Once want_mount_setattr() has returned a positive, it does require finish_mount_kattr() to release ->mnt_userns. Failing do_mount_setattr() does not change that. As the result, we can end up leaking userns and possibly mnt_idmap as well.

References

URL

Tags

	https://git.kernel.org/stable/c/142db4e76110dd80239f4e79810f85ea1735ad60
	https://git.kernel.org/stable/c/0748e553df0225754c316a92af3a77fdc057b358

Impacted products

Vendor

Product

Version

Version: c4a16820d90199409c9bf01c4f794e1e9e8d8fd8
Version: c4a16820d90199409c9bf01c4f794e1e9e8d8fd8

Version: 6.15

Show details on NVD website

To clipboard

{
  "containers": {
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      "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": [
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              "status": "affected",
              "version": "c4a16820d90199409c9bf01c4f794e1e9e8d8fd8",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
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          ]
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        {
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          "product": "Linux",
          "programFiles": [
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          ],
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          "versions": [
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            },
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              "versionType": "semver"
            },
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
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            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.5",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nuserns and mnt_idmap leak in open_tree_attr(2)\n\nOnce want_mount_setattr() has returned a positive, it does require\nfinish_mount_kattr() to release -\u003emnt_userns.  Failing do_mount_setattr()\ndoes not change that.\n\nAs the result, we can end up leaking userns and possibly mnt_idmap as\nwell."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:16:07.834Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/142db4e76110dd80239f4e79810f85ea1735ad60"
        },
        {
          "url": "https://git.kernel.org/stable/c/0748e553df0225754c316a92af3a77fdc057b358"
        }
      ],
      "title": "userns and mnt_idmap leak in open_tree_attr(2)",
      "x_generator": {
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      }
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  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38247",
    "datePublished": "2025-07-09T10:42:28.531Z",
    "dateReserved": "2025-04-16T04:51:23.997Z",
    "dateUpdated": "2025-07-28T04:16:07.834Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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