Vulnerability-Lookup

GSD-2021-46922

Vulnerability from gsd - Updated: 2024-02-26 06:03

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()

Aliases

CVE-2021-46922

JSON

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{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
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            "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"
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}

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

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

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)

Show details on NVD website

JSON

To clipboard

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                "role": "CISA Coordinator",
                "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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GSD-2021-46922

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

Tags

Sightings

Nomenclature

Related by attack behaviour