Executive Summary

Informations
Name CVE-2021-46922 First vendor Publication 2024-02-27
Vendor Cve Last vendor Modification 2024-04-10

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 5.5
Base Score 5.5 Environmental Score 5.5
impact SubScore 3.6 Temporal Score 5.5
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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()

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46922

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 3416

Sources (Detail)

https://git.kernel.org/stable/c/39c8d760d44cb3fa0d67e8cd505df81cf4d80999
https://git.kernel.org/stable/c/9d5171eab462a63e2fbebfccf6026e92be018f20
https://git.kernel.org/stable/c/bf84ef2dd2ccdcd8f2658476d34b51455f970ce4
Source Url

Alert History

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Date Informations
2024-04-10 21:27:39
  • Multiple Updates
2024-04-04 21:27:25
  • Multiple Updates
2024-02-27 17:27:29
  • Multiple Updates
2024-02-27 13:27:26
  • First insertion