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             AUSCERT External Security Bulletin Redistribution

             Intel Thunderbolt DCH Driver for Windows Advisory
                             10 November 2021


        AusCERT Security Bulletin Summary

Product:           Intel Thunderbolt Declarative Componentized Hardware (DCH) Drivers
Publisher:         Intel
Operating System:  Windows
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-0110  

Original Bulletin: 

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Intel ID:                 INTEL-SA-00533
Advisory Category:        Firmware
Impact of vulnerability : Denial of Service
Severity rating :         MEDIUM
Original release:         11/09/2021
Last revised:             11/09/2021


A potential security vulnerability in some Intel Thunderbolt Declarative
Componentized Hardware (DCH) Drivers for Windows may allow denial of service.
Intel is releasing software updates to mitigate this potential vulnerability.

Vulnerability Details:

CVEID: CVE-2021-0110

Description: Improper access control in some Intel(R) Thunderbolt(TM) Windows
DCH Drivers before version 1.41.1054.0 may allow unauthenticated user to
potentially enable denial of service via local access.

CVSS Base Score: 6.2 Medium

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

Affected Products:

Intel Thunderbolt 3 and 4 Windows DCH Drivers before version 1.41.1054.0 for:

. Intel JHL6540 & JHL6340 & JHL6240

. Intel JHL7540 & JHL7440 & JHL7340

. Intel JHL8540 & JHL8440

. Intel 10 ^ th Gen & Intel 11 ^ th Gen Core Processors with Thunderbolt


Intel recommends updating Intel Thunderbolt DCH Drivers for Windows to version
1.41.1094 or later.

Updates are available for download at this location:



This issue was found internally by Intel.

Intel, and nearly the entire technology industry, follows a disclosure practice
called Coordinated Disclosure, under which a cybersecurity vulnerability is
generally publicly disclosed only after mitigations are available.

Revision History

Revision    Date      Description
1.0      11/09/2021 Initial Release

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