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CVE-2021-26339

Description

A bug in AMD CPU’s core logic may allow for an attacker, using specific code from an unprivileged VM, to trigger a CPU core hang resulting in a potential denial of service. AMD believes the specific code includes a specific x86 instruction sequence that would not be generated by compilers.

POC

Reference

- https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027

- https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1028

Github

- https://github.com/ARPSyndicate/cve-scores

- https://github.com/ep-infosec/50_google_silifuzz

- https://github.com/google/silifuzz

- https://github.com/suddenabnormalsecrets/silifuzz