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

To clipboard

{
  "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": {
    "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": "142db4e76110dd80239f4e79810f85ea1735ad60",
              "status": "affected",
              "version": "c4a16820d90199409c9bf01c4f794e1e9e8d8fd8",
              "versionType": "git"
            },
            {
              "lessThan": "0748e553df0225754c316a92af3a77fdc057b358",
              "status": "affected",
              "version": "c4a16820d90199409c9bf01c4f794e1e9e8d8fd8",
              "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": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "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": [
        {
          "nodes": [
            {
              "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,
              "operator": "OR"
            }
          ]
        }
      ],
      "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": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "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"
}

Log in or create an account to share your comment.

Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

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.