cve-2021-46922
Vulnerability from cvelistv5
Published
2024-02-27 09:36
Modified
2024-11-04 11:30
Severity ?
Summary
KEYS: trusted: Fix TPM reservation for seal/unseal
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website


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                "id": "CVE-2021-46922",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-25T16:00:18.491671Z",
                "version": "2.0.3"
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              "type": "ssvc"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/keys/trusted-keys/trusted_tpm2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "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()"
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    "datePublished": "2024-02-27T09:36:27.145Z",
    "dateReserved": "2024-02-25T13:45:52.719Z",
    "dateUpdated": "2024-11-04T11:30:50.931Z",
    "state": "PUBLISHED"
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