high
7.8
CWE
665
Advisory Published
Updated

CVE-2021-26326

First published: Tue Nov 09 2021(Updated: )

Failure to validate VM_HSAVE_PA during SNP_INIT may result in a loss of memory integrity.

Credit: psirt@amd.com

Affected SoftwareAffected VersionHow to fix
AMD EPYC 7232p firmware<romepi-sp3_1.0.0.c
AMD EPYC 7232p firmware
AMD EPYC 7763 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7763 Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7713P Firmware
AMD EPYC 7713P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7713 Firmware
AMD EPYC 7663 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7663 Firmware
AMD EPYC 7643P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7643 Firmware
AMD EPYC 75F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 75F3 Firmware
AMD EPYC 7543P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7543P Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7543 Firmware
AMD EPYC 7513 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7513 Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7453
AMD EPYC 74F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 74F3 Firmware
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7443P Firmware
AMD EPYC 7443P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7443P
AMD EPYC 7413 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7413 Firmware
AMD EPYC 73F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 73F3 Firmware
Amd Epyc Server Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7343 Firmware
AMD EPYC 7313P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7313P Firmware
AMD EPYC 7313P Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 7313 Firmware
AMD EPYC 72F3 Firmware<milanpi-sp3_1.0.0.4
AMD EPYC 72F3 Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-26326?

    CVE-2021-26326 has been classified as a high-severity vulnerability due to its potential impact on memory integrity.

  • How do I fix CVE-2021-26326?

    To fix CVE-2021-26326, you should update your AMD EPYC firmware to the latest version specified in the AMD security bulletin.

  • What software is affected by CVE-2021-26326?

    CVE-2021-26326 primarily affects various versions of AMD EPYC firmware up to romepi-sp3_1.0.0.c.

  • Can CVE-2021-26326 be exploited remotely?

    Yes, CVE-2021-26326 may allow an attacker to exploit vulnerable systems remotely due to improper validation during initialization.

  • Is there a workaround for CVE-2021-26326?

    Currently, the best approach for mitigating CVE-2021-26326 is to apply the firmware updates as there are no effective workarounds provided.

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