nvmet: avoid potential UAF in nvmet_req_complete()

{
  "id": "ff5566adc2ecf9426af549db8cde1b7c1322a6238183e6519fbdf542456bce84",
  "url": "https://osv.dev/vulnerability/CVE-2023-53116",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "nvmet: avoid potential UAF in nvmet_req_complete()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: nvmet: avoid potential UAF in nvmet_req_complete() An nvme target ->queue_response() operation implementation may free the request passed as argument. Such implementation potentially could result in a use after free of the request pointer when percpu_ref_put() is called in nvmet_req_complete(). Avoid such problem by using a local variable to save the sq pointer before calling __nvmet_req_complete(), thus avoiding dereferencing the req pointer after that function call.",
    "evidence": "osv:CVE-2023-53116",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.14.311",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "4.19.279",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.4.238",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.176",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.104",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.21",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2023-53116",
      "aliases": [
        "CVE-2023-53116"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "a07b4970f464f13640e28e16dad6cfa33647cc99"
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                {
                  "fixed": "e5d99b29012bbf0e86929403209723b2806500c1"
                },
                {
                  "fixed": "fafcb4b26393870c45462f9af6a48e581dbbcf7e"
                },
                {
                  "fixed": "04c394208831d5e0d5cfee46722eb0f033cd4083"
                },
                {
                  "fixed": "a6317235da8aa7cb97529ebc8121cc2a4c4c437a"
                },
                {
                  "fixed": "f1d5888a5efe345b63c430b256e95acb0a475642"
                },
                {
                  "fixed": "bcd535f07c58342302a2cd2bdd8894fe0872c8a9"
                },
                {
                  "fixed": "8ed9813871038b25a934b21ab76b5b7dbf44fc3a"
                },
                {
                  "fixed": "6173a77b7e9d3e202bdb9897b23f2a8afe7bf286"
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              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53116.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.8.0"
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                  "fixed": "4.14.311"
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              "type": "ECOSYSTEM",
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                  "introduced": "4.20.0"
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            {
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                  "introduced": "5.5.0"
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                  "introduced": "5.11.0"
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            {
              "type": "ECOSYSTEM",
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                  "introduced": "5.16.0"
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                {
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              "type": "ECOSYSTEM",
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                  "introduced": "6.2.0"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53116.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.331374074Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/04c394208831d5e0d5cfee46722eb0f033cd4083",
        "https://git.kernel.org/stable/c/6173a77b7e9d3e202bdb9897b23f2a8afe7bf286",
        "https://git.kernel.org/stable/c/8ed9813871038b25a934b21ab76b5b7dbf44fc3a",
        "https://git.kernel.org/stable/c/a6317235da8aa7cb97529ebc8121cc2a4c4c437a",
        "https://git.kernel.org/stable/c/bcd535f07c58342302a2cd2bdd8894fe0872c8a9",
        "https://git.kernel.org/stable/c/e5d99b29012bbf0e86929403209723b2806500c1",
        "https://git.kernel.org/stable/c/f1d5888a5efe345b63c430b256e95acb0a475642",
        "https://git.kernel.org/stable/c/fafcb4b26393870c45462f9af6a48e581dbbcf7e",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53116.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53116",
        "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-2023-53116.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53116",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496983,
  "published_at": "2025-05-02T15:55:54.858+00:00"
}