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             AUSCERT External Security Bulletin Redistribution

                     2021.1 IPU - Intel VT-d Advisory
                                9 June 2021


        AusCERT Security Bulletin Summary

Product:           Intel Core Processors
                   Intel Pentium Processors
                   Intel Celeron Processors
                   Intel Atom Processors
Publisher:         Intel
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-24489  

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

Intel ID:                 INTEL-SA-00442
Advisory Category:        Hardware
Impact of vulnerability : Escalation of Privilege
Severity rating :         HIGH
Original release:         06/08/2021
Last revised:             06/08/2021


A potential security vulnerability in some Intel Virtualization Technology for
Directed I/0 (VT-d) products may allow escalation of privilege. Intel is
releasing firmware updates to mitigate this potential vulnerability.

Vulnerability Details:

CVEID: CVE-2021-24489

Description: Incomplete cleanup in some Intel(R) VT-d products may allow an
user to potentially enable escalation of privilege via local access.

CVSS Base Score: 8.8. High


Affected Products:

10th Generation Intel Core Processors

11th Generation Intel Core Processors

Intel Pentium Processor J Series

Intel Pentium Processor N Series Intel Celeron Processor J Series

Intel Celeron Processor N Series Intel Atom Processor

A Series Intel Atom Processor E3900 Series

Intel Pentium Processor N Series

Intel Celeron Processor N Series

Intel Atom Processor E3900 Series

Intel Pentium Processor Silver Series/ J&N Series

Intel Pentium Processor Silver Series/ J&N - Refresh

Intel Core Processors with Intel Hybrid Technology


Intel recommends that users of Intel VT-d update to the latest version provided
by the system manufacturer that addresses these issues.


These issues were found internally by Intel employees.

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      06/08/2021 Initial Release

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