block: fix blktrace debugfs entries leakage

{
  "id": "197379bb0efd85865b04204c788c6478ef54aad2fdc16c90f6b38f8c03d29594",
  "url": "https://osv.dev/vulnerability/CVE-2023-54209",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "block: fix blktrace debugfs entries leakage",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: block: fix blktrace debugfs entries leakage Commit 99d055b4fd4b (\"block: remove per-disk debugfs files in blk_unregister_queue\") moves blk_trace_shutdown() from blk_release_queue() to blk_unregister_queue(), this is safe if blktrace is created through sysfs, however, there is a regression in corner case. blktrace can still be enabled after del_gendisk() through ioctl if the disk is opened before del_gendisk(), and if blktrace is not shutdown through ioctl before closing the disk, debugfs entries will be leaked. Fix this problem by shutdown blktrace in disk_release(), this is safe because blk_trace_remove() is reentrant.",
    "evidence": "osv:CVE-2023-54209",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.39",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.3.13",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.4.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-54209",
      "aliases": [
        "CVE-2023-54209"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "99d055b4fd4bbb309c6cdb51a0d420669f777944"
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                {
                  "fixed": "aa07e56c6a9c7558165690d14eed4fe8babf34fb"
                },
                {
                  "fixed": "7149e57cf01184fba175589f8fbe9fbf33be02e1"
                },
                {
                  "fixed": "942e81650b81b4ca62f1d8c61de455c9e7c7e6ca"
                },
                {
                  "fixed": "dd7de3704af9989b780693d51eaea49a665bd9c2"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54209.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.19.0"
                },
                {
                  "fixed": "6.1.39"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.3.13"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.4.0"
                },
                {
                  "fixed": "6.4.4"
                }
              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54209.json"
          }
        }
      ],
      "modified": "2026-10-30T02:30:33.308948754Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/7149e57cf01184fba175589f8fbe9fbf33be02e1",
        "https://git.kernel.org/stable/c/942e81650b81b4ca62f1d8c61de455c9e7c7e6ca",
        "https://git.kernel.org/stable/c/aa07e56c6a9c7558165690d14eed4fe8babf34fb",
        "https://git.kernel.org/stable/c/dd7de3704af9989b780693d51eaea49a665bd9c2",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54209.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-54209",
        "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/2023/54xxx/CVE-2023-54209.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-54209",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 517682,
  "published_at": "2025-12-30T12:11:08.027+00:00"
}