Unrated severityNVD Advisory· Published May 9, 2023· Updated Jan 28, 2025
CVE-2021-26406
CVE-2021-26406
Description
Insufficient validation in parsing Owner's Certificate Authority (OCA) certificates in SEV (AMD Secure Encrypted Virtualization) and SEV-ES user application can lead to a host crash potentially resulting in denial of service.
Affected products
15- AMD/1st Gen AMD EPYC™ Processorsv5Range: various
- AMD/2nd Gen AMD EPYC™ Processorsv5Range: various
- AMD/2nd Gen AMD Ryzen™ Threadripper™ Processors “Colfax”v5Range: various
- AMD/3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDTv5Range: various
- AMD/AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” AM4v5Range: various
- AMD/Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” ULPv5Range: various
- AMD/Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock”v5Range: various
- AMD/Ryzen™ 2000 Series Desktop Processors “Pinnacle Ridge”v5Range: various
- AMD/Ryzen™ 2000 series Desktop Processors “Raven Ridge” AM4v5Range: various
- AMD/Ryzen™ 2000 Series Mobile Processors “Raven Ridge” FP5v5Range: various
- AMD/Ryzen™ 3000 Series Desktop Processors “Matisse” AM4v5Range: various
- AMD/Ryzen™ 3000 Series Mobile processor, 2nd Gen AMD Ryzen™ Mobile Processors with Radeon™ Graphics “Picasso”v5Range: various
- AMD/Ryzen™ Threadripper™ PRO Processors “Castle Peak” WSv5Range: various
Patches
Vulnerability mechanics
References
2- www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001mitrevendor-advisory
- www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001mitrevendor-advisory
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