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Intel® 82599 Ethernet Series Advisory

Intel ID: INTEL-SA-00571
Advisory Category: Software, Hardware
Impact of vulnerability: Denial of Service
Severity rating: MEDIUM
Original release: 02/08/2022
Last revised: 02/08/2022


Potential security vulnerabilities in the Intel® 82599 Ethernet Series Controllers and Adapters may allow denial of service.  Intel is releasing software updates and prescriptive guidance to address these potential vulnerabilities.

Vulnerability Details:

CVEID: CVE-2021-33096

Description: Improper isolation of shared resources in network on chip for the Intel(R) 82599 Ethernet Controllers and Adapters may allow an authenticated user to potentially enable denial of service via local access.

CVSS Base Score: 6.5 Medium



CVEID: CVE-2021-33061

Description: Insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters may allow an authenticated user to potentially enable denial of service via local access.

CVSS Base Score: 6.5 MEDIUM


Affected Products:

All Intel® 82599 Ethernet Series Controllers and associated Adapters.


Intel recommends following the steps below to address these issues.

For CVE-2021-33096:

  1. Download the prescriptive guidance found in this Application Note.
  2. Consult the Direct-Assignment Networking Fault Isolation in a Data Center Environment Prescriptive Guidance Addressing INTEL-SA-00571 Application Note


For CVE-2021-33061:

Update Intel® 82599 Ethernet Series Controllers and associated Adapters Kernel-mode Driver versions to 5.13.4 or higher.

Updates are available for download at this location:


Intel would like to thank Asaf Modelevsky (Amazon Web Services) for reporting these issues.

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 02/08/2022 Initial Release

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