firmware: arm_scmi: Unregister device notifier before IDR teardown

{
  "id": "0b9df9853d997bfc2610b77e4257e7d2f60042a3ec38aa7bccde9d330e06d4d5",
  "url": "https://osv.dev/vulnerability/CVE-2026-93092",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "firmware: arm_scmi: Unregister device notifier before IDR teardown",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Unregister device notifier before IDR teardown The requested-devices notifier looks up protocol fwnodes from the active_protocols IDR. During remove, unregister the notifier before releasing and destroying active_protocols so no notifier callback can race with the IDR teardown. Keep the bus notifier registered until after the protocol state is torn down, matching the existing remove ordering for SCMI bus users.",
    "evidence": "osv:CVE-2026-93092",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.157",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.110",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.52",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-93092",
      "aliases": [
        "CVE-2026-93092"
      ],
      "affected": [
        {
          "ranges": [
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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": "3ec1f79e912fa0e1c119753c819eb3c2591e71b7"
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "53b8c25df7082edd78a3fc63e359abee0f28fa70"
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                {
                  "fixed": "70a26b37389846f1f29a09f7983aa3f45feff529"
                },
                {
                  "fixed": "492fb49eac24beecd6d3c5e4744a513e626f8dcf"
                },
                {
                  "fixed": "f5e528f631425416f9b39e9d8b385c9f1ceb40d6"
                },
                {
                  "fixed": "74fcaa0a3f7ad3edfde2e8c6cb8ae457a00e0b7a"
                },
                {
                  "fixed": "66a0bbf30cc14140fe13f63cd594a7c1ee352b75"
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              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93092.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.3.0"
                },
                {
                  "fixed": "6.6.157"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.110"
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              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.13.0"
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                {
                  "fixed": "6.18.52"
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
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                {
                  "fixed": "7.2.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93092.json"
          }
        }
      ],
      "modified": "2026-11-01T02:30:56.059643680Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3ec1f79e912fa0e1c119753c819eb3c2591e71b7",
        "https://git.kernel.org/stable/c/492fb49eac24beecd6d3c5e4744a513e626f8dcf",
        "https://git.kernel.org/stable/c/66a0bbf30cc14140fe13f63cd594a7c1ee352b75",
        "https://git.kernel.org/stable/c/70a26b37389846f1f29a09f7983aa3f45feff529",
        "https://git.kernel.org/stable/c/74fcaa0a3f7ad3edfde2e8c6cb8ae457a00e0b7a",
        "https://git.kernel.org/stable/c/f5e528f631425416f9b39e9d8b385c9f1ceb40d6",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93092.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-93092",
        "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/2026/93xxx/CVE-2026-93092.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-93092",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 495813,
  "published_at": "2026-09-17T16:11:07.715+00:00"
}