Executive Summary

Informations
Name CVE-2021-46953 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:H/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 6.7
Base Score 6.7 Environmental Score 6.7
impact SubScore 5.9 Temporal Score 6.7
Exploitabality Sub Score 0.8
 
Attack Vector Local Attack Complexity Low
Privileges Required High User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High 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:

ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure

When failing the driver probe because of invalid firmware properties, the GTDT driver unmaps the interrupt that it mapped earlier.

However, it never checks whether the mapping of the interrupt actially succeeded. Even more, should the firmware report an illegal interrupt number that overlaps with the GIC SGI range, this can result in an IPI being unmapped, and subsequent fireworks (as reported by Dann Frazier).

Rework the driver to have a slightly saner behaviour and actually check whether the interrupt has been mapped before unmapping things.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46953

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 3424

Sources (Detail)

https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277
https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8
https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4
https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01
https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305b
https://git.kernel.org/stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724
https://git.kernel.org/stable/c/e0f2d86481eaa83df33b0793f75212919db7a19d
Source Url

Alert History

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0
1
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Date Informations
2024-04-11 00:27:31
  • Multiple Updates
2024-02-28 17:27:37
  • Multiple Updates
2024-02-28 00:27:27
  • First insertion