CVE-2026-92490 (GCVE-0-2026-92490)
Vulnerability from cvelistv5
Published
2026-09-17 16:10
Modified
2026-10-19 09:03
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Unrequest devices if driver registration fails scmi_driver_register() requests protocol devices before registering the driver. If driver_register() fails, those requests remain in the global IDR and retain pointers to the module's ID table. Once the failed module load releases that storage, later request matching or SCMI device creation can dereference the stale pointers. Unrequest the complete protocol table before returning the registration failure. At this point table registration succeeded, so every entry is owned by the current registration attempt.
References
Impacted products
Vendor Product Version
Linux Linux Version: d3cd7c525fd2ecce3a6c963f314969a54783d211
Version: d3cd7c525fd2ecce3a6c963f314969a54783d211
Version: d3cd7c525fd2ecce3a6c963f314969a54783d211
Version: d3cd7c525fd2ecce3a6c963f314969a54783d211
Version: d3cd7c525fd2ecce3a6c963f314969a54783d211
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/bus.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_scmi/bus.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"
            },
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              "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:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "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: Unrequest devices if driver registration fails\n\nscmi_driver_register() requests protocol devices before registering the\ndriver. If driver_register() fails, those requests remain in the global\nIDR and retain pointers to the module\u0027s ID table. Once the failed module\nload releases that storage, later request matching or SCMI device creation\ncan dereference the stale pointers.\n\nUnrequest the complete protocol table before returning the registration\nfailure. At this point table registration succeeded, so every entry is\nowned by the current registration attempt."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:03:56.750Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/524e57035af2d32498af9dd8fa6fdc92fcc8f80a"
        },
        {
          "url": "https://git.kernel.org/stable/c/06e65e07a1bcb39a1ebc8bb89a981f8e07900497"
        },
        {
          "url": "https://git.kernel.org/stable/c/a76b20b1f03099204db29b90e1024fe1c2b2cdd7"
        },
        {
          "url": "https://git.kernel.org/stable/c/4520d4a1db37198756ad23568e36cdf091b6ffff"
        },
        {
          "url": "https://git.kernel.org/stable/c/9f7cd6a62aa754ed6b48cbd5d50de40add1bcc86"
        }
      ],
      "title": "firmware: arm_scmi: Unrequest devices if driver registration fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-92490",
    "datePublished": "2026-09-17T16:10:05.347Z",
    "dateReserved": "2026-09-16T12:21:13.871Z",
    "dateUpdated": "2026-10-19T09:03:56.750Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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