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

Vulnerability from cvelistv5 – Published: 2025-10-22 13:23 – Updated: 2026-05-11 19:21
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 CPE status
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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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/char/tpm/eventlog/acpi.c"
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      "cpeApplicability": [
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          "nodes": [
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
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          "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": "2026-05-11T19:21:49.466Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
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          "url": "https://git.kernel.org/stable/c/8740a12ca2e2959531ad253bac99ada338b33d80"
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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": "2026-05-11T19:21:49.466Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50562",
      "date": "2026-09-13",
      "epss": "0.00199",
      "percentile": "0.09877"
    },
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-21T19:08:33+00:00",
      "cve": "CVE-2022-50562",
      "id": "CVE-2022-50562",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "120",
      "product_status:known_affected": "124",
      "product_status:known_not_affected": "118",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tpm: acpi: Call acpi_put_table() to fix memory leak",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50562.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T12:43:23Z",
      "cve": "CVE-2022-50562",
      "id": "CVE-2022-50562",
      "initial_release_date": "2025-10-24T01:16:48Z",
      "product_status:known_affected": "423",
      "product_status:known_not_affected": "317",
      "product_status:recommended": "245",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50562",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50562.json",
      "version": "30"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.