Vulnerability-Lookup

FKIE_CVE-2023-52864

Vulnerability from fkie_nvd - Published: 2024-05-21 16:15 - Updated: 2026-08-04 10:18

Severity

7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: platform/x86: wmi: Fix opening of char device Since commit fa1f68db6ca7 ("drivers: misc: pass miscdevice pointer via file private data"), the miscdevice stores a pointer to itself inside filp->private_data, which means that private_data will not be NULL when wmi_char_open() is called. This might cause memory corruption should wmi_char_open() be unable to find its driver, something which can happen when the associated WMI device is deleted in wmi_free_devices(). Fix the problem by using the miscdevice pointer to retrieve the WMI device data associated with a char device using container_of(). This also avoids wmi_char_open() picking a wrong WMI device bound to a driver with the same name as the original driver.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/44a96796d25809502c75771d40ee693c2e44724e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cf098e937dd125c0317a0d6f261ac2a950a233d6	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/eba9ac7abab91c8f6d351460239108bef5e7a0b6	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fb7b06b59c6887659c6ed0ecd3110835eecbb6a3	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/44a96796d25809502c75771d40ee693c2e44724e	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/cf098e937dd125c0317a0d6f261ac2a950a233d6	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/eba9ac7abab91c8f6d351460239108bef5e7a0b6	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/fb7b06b59c6887659c6ed0ecd3110835eecbb6a3	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/x86/wmi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "44b6b7661132b1b0e5fd3147ded66f1e4a817ca9",
              "versionType": "git"
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              "versionType": "git"
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            },
            {
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              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
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              "status": "affected",
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        },
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          "programFiles": [
            "drivers/platform/x86/wmi.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "4.15"
            },
            {
              "lessThan": "4.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.299",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.201",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.139",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.7",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F51D1457-86F8-4A6C-A7B9-323058B3C5E8",
              "versionEndExcluding": "4.19.299",
              "versionStartIncluding": "4.15",
              "vulnerable": true
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            {
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              "versionEndExcluding": "6.1.63",
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            {
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              "matchCriteriaId": "825F64D9-E99F-49AA-8A7B-EF7C2965C5B2",
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            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4CBFF885-A4D3-4F21-B6FD-4D770034C048",
              "versionEndExcluding": "6.6.2",
              "versionStartIncluding": "6.6",
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            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: wmi: Fix opening of char device\n\nSince commit fa1f68db6ca7 (\"drivers: misc: pass miscdevice pointer via\nfile private data\"), the miscdevice stores a pointer to itself inside\nfilp-\u003eprivate_data, which means that private_data will not be NULL when\nwmi_char_open() is called. This might cause memory corruption should\nwmi_char_open() be unable to find its driver, something which can\nhappen when the associated WMI device is deleted in wmi_free_devices().\n\nFix the problem by using the miscdevice pointer to retrieve the WMI\ndevice data associated with a char device using container_of(). This\nalso avoids wmi_char_open() picking a wrong WMI device bound to a\ndriver with the same name as the original driver."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: plataforma/x86: wmi: corrige la apertura del dispositivo char. Desde la confirmaci\u00f3n fa1f68db6ca7 (\"drivers: misc: pasar el puntero del dispositivo misc a trav\u00e9s de datos privados del archivo\"), el dispositivo misc almacena un puntero a s\u00ed mismo en su interior. filp-\u0026gt;private_data, lo que significa que private_data no ser\u00e1 NULL cuando se llame a wmi_char_open(). Esto podr\u00eda causar da\u00f1os en la memoria si wmi_char_open() no puede encontrar su controlador, algo que puede suceder cuando el dispositivo WMI asociado se elimina en wmi_free_devices(). Solucione el problema utilizando el puntero miscdevice para recuperar los datos del dispositivo WMI asociados con un dispositivo char usando container_of(). Esto tambi\u00e9n evita que wmi_char_open() seleccione un dispositivo WMI incorrecto vinculado a un controlador con el mismo nombre que el controlador original."
    }
  ],
  "id": "CVE-2023-52864",
  "lastModified": "2026-08-04T10:18:46.350",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-52864",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-05-22T18:21:10.578430Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-21T16:15:23.317",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}

CVE-2023-52864 (GCVE-0-2023-52864)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:31 – Updated: 2026-08-05 09:11

Title

platform/x86: wmi: Fix opening of char device

Summary

Severity

7 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-05-22 18:21 UTC

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/cf098e937dd125c03…
https://git.kernel.org/stable/c/9fb0eed09e1470cd4…
https://git.kernel.org/stable/c/d426a2955e45a95b2…
https://git.kernel.org/stable/c/e0bf076b734a2fab9…
https://git.kernel.org/stable/c/44a96796d25809502…
https://git.kernel.org/stable/c/36d85fa7ae0d6be65…
https://git.kernel.org/stable/c/fb7b06b59c6887659…
https://git.kernel.org/stable/c/eba9ac7abab91c8f6…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 , < cf098e937dd125c0317a0d6f261ac2a950a233d6 (git) Affected: 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 , < 9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203 (git) Affected: 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 , < d426a2955e45a95b2282764105fcfb110a540453 (git) Affected: 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 , < e0bf076b734a2fab92d8fddc2b8b03462eee7097 (git) Affected: 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 , < 44a96796d25809502c75771d40ee693c2e44724e (git) Affected: 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 , < 36d85fa7ae0d6be651c1a745191fa7ef055db43e (git) Affected: 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 , < fb7b06b59c6887659c6ed0ecd3110835eecbb6a3 (git) Affected: 44b6b7661132b1b0e5fd3147ded66f1e4a817ca9 , < eba9ac7abab91c8f6d351460239108bef5e7a0b6 (git)
Linux	Linux	Affected: 4.15 Unaffected: 0 , < 4.15 (semver) Unaffected: 4.19.299 , ≤ 4.19.* (semver) Unaffected: 5.4.261 , ≤ 5.4.* (semver) Unaffected: 5.10.201 , ≤ 5.10.* (semver) Unaffected: 5.15.139 , ≤ 5.15.* (semver) Unaffected: 6.1.63 , ≤ 6.1.* (semver) Unaffected: 6.5.12 , ≤ 6.5.* (semver) Unaffected: 6.6.2 , ≤ 6.6.* (semver) Unaffected: 6.7 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-52864",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2024-05-22T18:21:10.578430Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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        "providerMetadata": {
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          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
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            "url": "https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453"
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            "tags": [
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            "url": "https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097"
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        "title": "CVE Program Container"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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            {
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              "version": "0",
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            {
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              "version": "5.10.201",
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            {
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              "status": "unaffected",
              "version": "5.15.139",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.12",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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        }
      ],
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                {
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                  "versionEndExcluding": "6.7",
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              ],
              "negate": false,
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      "descriptions": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: wmi: Fix opening of char device\n\nSince commit fa1f68db6ca7 (\"drivers: misc: pass miscdevice pointer via\nfile private data\"), the miscdevice stores a pointer to itself inside\nfilp-\u003eprivate_data, which means that private_data will not be NULL when\nwmi_char_open() is called. This might cause memory corruption should\nwmi_char_open() be unable to find its driver, something which can\nhappen when the associated WMI device is deleted in wmi_free_devices().\n\nFix the problem by using the miscdevice pointer to retrieve the WMI\ndevice data associated with a char device using container_of(). This\nalso avoids wmi_char_open() picking a wrong WMI device bound to a\ndriver with the same name as the original driver."
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      "metrics": [
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached by opening the local misc char device `/dev/wmi/$driver` (typically `/dev/wmi/dell-smbios`): open \u2192 misc_open \u2192 wmi_char_open. There is no network or adjacent-link path into this platform/x86 WMI code.\nAC:H - Memory corruption requires wmi_char_open() to fail its driver lookup while misc_open still succeeds, which the fix ties to wmi_free_devices() list_del before misc_deregister\u2014i.e. concurrent ACPI/platform WMI removal (e.g. rmmod wmi). An unprivileged attacker can spam open/ioctl but cannot induce that privileged teardown, matching other module-unload races scored AC:H.\nPR:L - The char device is registered with mode 0444, so any local unprivileged user can open it and issue read/ioctl; no init-namespace root or capability is required on the attacker\u2019s side of the race.\nUI:N - The attacker opens and operates on the WMI char device in their own process; no victim action is required. Concurrent administrative device removal is Attack Complexity, not User Interaction.\nS:U - Type confusion / use-after-free stays inside the host kernel\u2019s WMI/misc authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - Failed lookup leaves filp-\u003eprivate_data as a miscdevice* that read/ioctl treat as struct wmi_block, causing out-of-bounds reads of adjacent heap; if the wblock is freed while the fd is held this becomes a UAF disclosure primitive, scored High per kernel guidance.\nI:H - The same type confusion/UAF makes wmi_ioctl() mutex_lock, dereference handler_data, and copy_from_user() through misinterpreted pointers\u2014yielding heap corruption and an arbitrary-write primitive after reclaim, so Integrity is High.\nA:H - Misinterpreting a miscdevice as a wmi_block (or using a freed wblock) reliably leads to invalid memory access, oops/panic, or hang on corrupted locks; any such kernel crash/UAF is Availability High."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:11:43.009Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/cf098e937dd125c0317a0d6f261ac2a950a233d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/9fb0eed09e1470cd4021ff52b2b9dfcbcee4c203"
        },
        {
          "url": "https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453"
        },
        {
          "url": "https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/36d85fa7ae0d6be651c1a745191fa7ef055db43e"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb7b06b59c6887659c6ed0ecd3110835eecbb6a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/eba9ac7abab91c8f6d351460239108bef5e7a0b6"
        }
      ],
      "title": "platform/x86: wmi: Fix opening of char device",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52864",
    "datePublished": "2024-05-21T15:31:55.875Z",
    "dateReserved": "2024-05-21T15:19:24.261Z",
    "dateUpdated": "2026-08-05T09:11:43.009Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.