tty: pcn_uart: fix memory leak with using debugfs_lookup()

{
  "id": "0a82298cfc9503db56baf316bb7023b61dd2a6721fbfe5ab862e9606191fac1d",
  "url": "https://osv.dev/vulnerability/CVE-2023-53173",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "tty: pcn_uart: fix memory leak with using debugfs_lookup()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: tty: pcn_uart: 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-2023-53173",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.100",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.18",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-53173",
      "aliases": [
        "CVE-2023-53173"
      ],
      "affected": [
        {
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              "type": "GIT",
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                {
                  "fixed": "139769c4bd8273b5e3f85ea474aa37018fe7e436"
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                {
                  "fixed": "04a189c720aa2b6091442113ce9b9bc93552dff8"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53173.json"
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        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "5.13.0"
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "5.16.0"
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                {
                  "fixed": "6.1.18"
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              ]
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.5"
                }
              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53173.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.097193901Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/04a189c720aa2b6091442113ce9b9bc93552dff8",
        "https://git.kernel.org/stable/c/139769c4bd8273b5e3f85ea474aa37018fe7e436",
        "https://git.kernel.org/stable/c/4459d1e7bd0421b3b6fcd745773d8823f71615ef",
        "https://git.kernel.org/stable/c/cf042964c2fa72950bbbf25b2cdd732b873e89db",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53173.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53173",
        "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-2023-53173.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53173",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 496984,
  "published_at": "2025-09-15T14:04:07.411+00:00"
}