CVE-2022-50562 (GCVE-0-2022-50562)

Vulnerability from cvelistv5 – Published: 2025-10-22 13:23 – Updated: 2025-10-22 13:23
VLAI?
Title
tpm: acpi: Call acpi_put_table() to fix memory leak
Summary
In the Linux kernel, the following vulnerability has been resolved: tpm: acpi: Call acpi_put_table() to fix memory leak The start and length of the event log area are obtained from TPM2 or TCPA table, so we call acpi_get_table() to get the ACPI information, but the acpi_get_table() should be coupled with acpi_put_table() to release the ACPI memory, add the acpi_put_table() properly to fix the memory leak. While we are at it, remove the redundant empty line at the end of the tpm_read_log_acpi().
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0bfb23746052168620c5b52f49d8a47c3bb022fa , < 8ddc48068ac85740d3d5f9f3b0b323e733a35b33 (git)
Affected: 0bfb23746052168620c5b52f49d8a47c3bb022fa , < 638cd298dfebce46919cbd6cf1884701215f506d (git)
Affected: 0bfb23746052168620c5b52f49d8a47c3bb022fa , < 694a3d66f493afd77c704c6de91d9be4d6e004e4 (git)
Affected: 0bfb23746052168620c5b52f49d8a47c3bb022fa , < bf31e3f8077af539feaf4e9bbf82e8eb51e7e5a8 (git)
Affected: 0bfb23746052168620c5b52f49d8a47c3bb022fa , < 8740a12ca2e2959531ad253bac99ada338b33d80 (git)
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    Linux Linux Affected: 4.18
Unaffected: 0 , < 4.18 (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.87 , ≤ 5.15.* (semver)
Unaffected: 6.0.17 , ≤ 6.0.* (semver)
Unaffected: 6.1.3 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/char/tpm/eventlog/acpi.c"
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              "version": "6.0.17",
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              "status": "unaffected",
              "version": "6.1.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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                },
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntpm: acpi: Call acpi_put_table() to fix memory leak\n\nThe start and length of the event log area are obtained from\nTPM2 or TCPA table, so we call acpi_get_table() to get the\nACPI information, but the acpi_get_table() should be coupled with\nacpi_put_table() to release the ACPI memory, add the acpi_put_table()\nproperly to fix the memory leak.\n\nWhile we are at it, remove the redundant empty line at the\nend of the tpm_read_log_acpi()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-22T13:23:21.421Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8ddc48068ac85740d3d5f9f3b0b323e733a35b33"
        },
        {
          "url": "https://git.kernel.org/stable/c/638cd298dfebce46919cbd6cf1884701215f506d"
        },
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          "url": "https://git.kernel.org/stable/c/694a3d66f493afd77c704c6de91d9be4d6e004e4"
        },
        {
          "url": "https://git.kernel.org/stable/c/bf31e3f8077af539feaf4e9bbf82e8eb51e7e5a8"
        },
        {
          "url": "https://git.kernel.org/stable/c/8740a12ca2e2959531ad253bac99ada338b33d80"
        }
      ],
      "title": "tpm: acpi: Call acpi_put_table() to fix memory leak",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50562",
    "datePublished": "2025-10-22T13:23:21.421Z",
    "dateReserved": "2025-10-22T13:20:23.759Z",
    "dateUpdated": "2025-10-22T13:23:21.421Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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