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CVE-2022-21180: INTEL-SA-00645

Improper input validation for some Intel® Processors may allow an authenticated user to potentially cause a denial of service via local access.

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Intel® Processors MMIO Undefined Access Advisory

**Summary: **

A potential security vulnerability in Memory Mapped I/O (MMIO) for some 14nm Client/Xeon E3 Intel® Processors may allow a denial of service in certain virtualized environments.

Vulnerability Details:

CVEID: CVE-2022-21180

Description: Improper input validation for some Intel® Processors may allow an authenticated user to potentially cause a denial of service via local access.

CVSS Base Score: 5.5 Medium

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

Affected Products:

Some 14nm Client/Xeon E3 Intel® Processors, see full list:

https://www.intel.com/content/www/us/en/developer/topic-technology/software-security-guidance/processors-affected-consolidated-product-cpu-model.html

Recommendations:

Intel recommends that users of affected Intel® Processors update to the latest Virtual Machine Monitor provided by the VMM or OS provider that addresses these issues.

Acknowledgements:

This issue was found internally by Intel employees. Intel would like to thank Alysa Milburn, Jason Brandt, Avishai Redelman, Nir Lavi for reporting this issue. Intel would like to thank Ke Sun, Alan Miller, Shlomi Alkalay, Robert Jones, and Ezra Caltum.

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

06/14/2022

Initial Release

Legal Notices and Disclaimers

Intel provides these materials as-is, with no express or implied warranties.

All products, dates, and figures specified are preliminary based on current expectations, and are subject to change without notice.

Intel, processors, chipsets, and desktop boards may contain design defects or errors known as errata, which may cause the product to deviate from published specifications. Current characterized errata are available on request.

Intel technologies’ features and benefits depend on system configuration and may require enabled hardware, software or service activation. Performance varies depending on system configuration. No product or component can be absolutely secure. Check with your system manufacturer or retailer or learn more at https://intel.com.

Some results have been estimated or simulated using internal Intel analysis or architecture simulation or modeling, and provided to you for informational purposes. Any differences in your system hardware, software or configuration may affect your actual performance.

Intel and the Intel logo are trademarks of Intel Corporation in the United States and other countries.

*Other names and brands may be claimed as the property of others.
Copyright © Intel Corporation 2022

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