time/debug: Fix memory leak with using debugfs_lookup()

{
  "id": "80318306bac4211f5abcd42ef2a7718812993bff901b63b10947445fa3a9a4e0",
  "url": "https://osv.dev/vulnerability/CVE-2023-53403",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "time/debug: Fix memory leak with using debugfs_lookup()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: time/debug: Fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once.",
    "evidence": "osv:CVE-2023-53403",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.99",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2023-53403",
      "aliases": [
        "CVE-2023-53403"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "fixed": "dc39fbd865a9819db4b622f610ba17b2ebc294f4"
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                {
                  "fixed": "15cffd01ed80e3506e29ba9f441e2358413b7317"
                },
                {
                  "fixed": "b588b42d077ce93c98704b41003bcec6a564b738"
                },
                {
                  "fixed": "5b268d8abaec6cbd4bd70d062e769098d96670aa"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53403.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.13.0"
                },
                {
                  "fixed": "5.15.99"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.16"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53403.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.467175436Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/15cffd01ed80e3506e29ba9f441e2358413b7317",
        "https://git.kernel.org/stable/c/5b268d8abaec6cbd4bd70d062e769098d96670aa",
        "https://git.kernel.org/stable/c/b588b42d077ce93c98704b41003bcec6a564b738",
        "https://git.kernel.org/stable/c/dc39fbd865a9819db4b622f610ba17b2ebc294f4",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53403.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53403",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53403.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53403",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521040,
  "published_at": "2025-09-18T13:58:43.032+00:00"
}