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CVE-2022-21499

Status: ModifiedMedium (6.7)—

KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (2)

Debian — Debian LinuxOracle — Linux

CWEs

References

Raw JSON (NVD)

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  "cveTags": [],
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          "options": [
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              "automatable": "no"
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              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2024-09-24T13:49:06.986360Z"
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          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
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          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
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        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "type": "Secondary",
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  "published": "2022-06-09T21:15:07.657",
  "references": [
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      "source": "secalert_us@oracle.com"
    },
    {
      "url": "https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066",
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      "description": [
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    },
    {
      "lang": "es",
      "value": "KGDB y KDB permiten el acceso de lectura y escritura a la memoria del kernel, y por lo tanto deben ser restringidos durante el bloqueo. Un atacante con acceso a un puerto serie podría activar el depurador, por lo que es importante que el depurador respete el modo de bloqueo cuando/si se activa. Puntuación de base 6.7, CVSS 3.1 (impactos en la confidencialidad, integridad y disponibilidad). Vector CVSS: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)"
    }
  ],
  "lastModified": "2026-06-17T04:26:23.673",
  "configurations": [
    {
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}