fkie_cve-2021-46922
Vulnerability from fkie_nvd
Published
2024-02-27 10:15
Modified
2024-11-21 06:34
Summary
In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: Fix TPM reservation for seal/unseal The original patch 8c657a0590de ("KEYS: trusted: Reserve TPM for seal and unseal operations") was correct on the mailing list: https://lore.kernel.org/linux-integrity/20210128235621.127925-4-jarkko@kernel.org/ But somehow got rebased so that the tpm_try_get_ops() in tpm2_seal_trusted() got lost. This causes an imbalanced put of the TPM ops and causes oopses on TIS based hardware. This fix puts back the lost tpm_try_get_ops()
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *



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              "versionEndExcluding": "5.10.33",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: trusted: Fix TPM reservation for seal/unseal\n\nThe original patch 8c657a0590de (\"KEYS: trusted: Reserve TPM for seal\nand unseal operations\") was correct on the mailing list:\n\nhttps://lore.kernel.org/linux-integrity/20210128235621.127925-4-jarkko@kernel.org/\n\nBut somehow got rebased so that the tpm_try_get_ops() in\ntpm2_seal_trusted() got lost.  This causes an imbalanced put of the\nTPM ops and causes oopses on TIS based hardware.\n\nThis fix puts back the lost tpm_try_get_ops()"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KEYS: de confianza: corrige la reserva de TPM para sellar/dessellar El parche original 8c657a0590de (\"KEYS: de confianza: reservar TPM para operaciones de sellar y dessellar\") era correcto en la lista de correo: https ://lore.kernel.org/linux-integrity/20210128235621.127925-4-jarkko@kernel.org/ Pero de alguna manera se modific\u00f3 la base para que tpm_try_get_ops() en tpm2_seal_trusted() se perdiera. Esto provoca un desequilibrio en las operaciones de TPM y provoca fallos en el hardware basado en TIS. Esta soluci\u00f3n devuelve el tpm_try_get_ops() perdido"
    }
  ],
  "id": "CVE-2021-46922",
  "lastModified": "2024-11-21T06:34:56.430",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-02-27T10:15:07.053",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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