CVE-2026-93092 (GCVE-0-2026-93092)
Vulnerability from cvelistv5
Published
2026-09-17 16:11
Modified
2026-10-30 12:35
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 0c0e28e587198b5b4fd742b761cbf7ef9a7fef1c
Version: 53b8c25df7082edd78a3fc63e359abee0f28fa70
Version: 53b8c25df7082edd78a3fc63e359abee0f28fa70
Version: 53b8c25df7082edd78a3fc63e359abee0f28fa70
Version: 53b8c25df7082edd78a3fc63e359abee0f28fa70
Version: 53b8c25df7082edd78a3fc63e359abee0f28fa70
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/driver.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/driver.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
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                {
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                  "versionEndExcluding": "7.2.6",
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Unregister device notifier before IDR teardown\n\nThe requested-devices notifier looks up protocol fwnodes from the\nactive_protocols IDR. During remove, unregister the notifier before\nreleasing and destroying active_protocols so no notifier callback can race\nwith the IDR teardown.\n\nKeep the bus notifier registered until after the protocol state is torn\ndown, matching the existing remove ordering for SCMI bus users."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:35:56.077Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3ec1f79e912fa0e1c119753c819eb3c2591e71b7"
        },
        {
          "url": "https://git.kernel.org/stable/c/70a26b37389846f1f29a09f7983aa3f45feff529"
        },
        {
          "url": "https://git.kernel.org/stable/c/492fb49eac24beecd6d3c5e4744a513e626f8dcf"
        },
        {
          "url": "https://git.kernel.org/stable/c/f5e528f631425416f9b39e9d8b385c9f1ceb40d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/74fcaa0a3f7ad3edfde2e8c6cb8ae457a00e0b7a"
        },
        {
          "url": "https://git.kernel.org/stable/c/66a0bbf30cc14140fe13f63cd594a7c1ee352b75"
        }
      ],
      "title": "firmware: arm_scmi: Unregister device notifier before IDR teardown",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93092",
    "datePublished": "2026-09-17T16:11:07.715Z",
    "dateReserved": "2026-09-17T16:02:15.084Z",
    "dateUpdated": "2026-10-30T12:35:56.077Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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