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

Vulnerability from cvelistv5 – Published: 2024-05-21 15:31 – Updated: 2026-08-05 09:11
VLAI
Title
platform/x86: wmi: Fix opening of char device
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.
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 CNA under the mitre root
CNA scorecard D 53/100 over 6992 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
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)
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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)
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            {
              "url": "https://git.kernel.org/stable/c/d426a2955e45a95b2282764105fcfb110a540453"
            },
            {
              "url": "https://git.kernel.org/stable/c/e0bf076b734a2fab92d8fddc2b8b03462eee7097"
            },
            {
              "url": "https://git.kernel.org/stable/c/44a96796d25809502c75771d40ee693c2e44724e"
            },
            {
              "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"
          }
        }
      },
      "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"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Sightings

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