clk: microchip: fix potential UAF in auxdev release callback

{
  "id": "ee2eee0549fc0e73d0cdd8e8b3e54fa6853fea20034871b4351d152b67a051fc",
  "url": "https://osv.dev/vulnerability/CVE-2023-53636",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "clk: microchip: fix potential UAF in auxdev release callback",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: clk: microchip: fix potential UAF in auxdev release callback Similar to commit 1c11289b34ab (\"peci: cpu: Fix use-after-free in adev_release()\"), the auxiliary device is not torn down in the correct order. If auxiliary_device_add() fails, the release callback will be called twice, resulting in a UAF. Due to timing, the auxdev code in this driver \"took inspiration\" from the aforementioned commit, and thus its bugs too! Moving auxiliary_device_uninit() to the unregister callback instead avoids the issue.",
    "evidence": "osv:CVE-2023-53636",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.28",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.15",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.3.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-53636",
      "aliases": [
        "CVE-2023-53636"
      ],
      "affected": [
        {
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "fixed": "d7d6dacf39ed102d7667721ca1700022c9c8b11a"
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                {
                  "fixed": "934406b2d42eaf3fc57f5546cc68ff7ab9680bb3"
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                {
                  "fixed": "7455b7007b9e93bcc2bc9c1c6c73a228e3152069"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53636.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.1.0"
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                {
                  "fixed": "6.1.28"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.15"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.3.0"
                },
                {
                  "fixed": "6.3.2"
                }
              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53636.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.477046418Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/5b4052aa956e11bcd19e50ca559eb38dcb46201b",
        "https://git.kernel.org/stable/c/7455b7007b9e93bcc2bc9c1c6c73a228e3152069",
        "https://git.kernel.org/stable/c/934406b2d42eaf3fc57f5546cc68ff7ab9680bb3",
        "https://git.kernel.org/stable/c/d7d6dacf39ed102d7667721ca1700022c9c8b11a",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53636.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53636",
        "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-2023-53636.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53636",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 490799,
  "published_at": "2025-10-07T15:19:37.655+00:00"
}