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GHSA-G9MF-QVGG-VWXR

Vulnerability from github – Published: 2024-02-27 12:31 – Updated: 2024-04-10 18:30

Details

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()

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2021-46922"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-27T10:15:07Z",
    "severity": "MODERATE"
  },
  "details": "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()",
  "id": "GHSA-g9mf-qvgg-vwxr",
  "modified": "2024-04-10T18:30:46Z",
  "published": "2024-02-27T12:31:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46922"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39c8d760d44cb3fa0d67e8cd505df81cf4d80999"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d5171eab462a63e2fbebfccf6026e92be018f20"
    },
    {
      "type": "WEB",
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  "severity": [
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      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-46922 (GCVE-0-2021-46922)

Vulnerability from cvelistv5 – Published: 2024-02-27 09:36 – Updated: 2026-08-05 08:45

Title

KEYS: trusted: Fix TPM reservation for seal/unseal

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()

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-25 16:00 UTC

Assigner

Linux mitre root Scorecard

References

3 references

URL	Tags
https://git.kernel.org/stable/c/bf84ef2dd2ccdcd8f…
https://git.kernel.org/stable/c/39c8d760d44cb3fa0…
https://git.kernel.org/stable/c/9d5171eab462a63e2…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 67118bb78d72aab5b831f054a74ae856339a1974 , < bf84ef2dd2ccdcd8f2658476d34b51455f970ce4 (git) Affected: 498b8fc1cdc13b57b02dd28544b18323900fae10 , < 39c8d760d44cb3fa0d67e8cd505df81cf4d80999 (git) Affected: 8c657a0590de585b1115847c17b34a58025f2f4b , < 9d5171eab462a63e2fbebfccf6026e92be018f20 (git)
Linux	Linux	Affected: 5.10.20 , < 5.10.33 (semver) Affected: 5.11.3 , < 5.11.17 (semver)

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                "timestamp": "2024-07-25T16:00:18.491671Z",
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Sightings

Author	Source	Type	Date	Other

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.

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GHSA-G9MF-QVGG-VWXR

CVE-2021-46922 (GCVE-0-2021-46922)

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