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KVM SVM Out-Of-Bounds Read/Write

KVM SVM Out-Of-Bounds Read/Write
Posted Nov 22, 2021
Authored by Google Security Research, Felix Wilhelm

A KVM guest using SEV-ES (Secure Encrypted Virtualization - Encrypted State) can trigger out-of-bounds reads and writes in the host kernel via a malicious VMGEXIT using the exit reason SVM_EXIT_IOIO.

tags | advisory, kernel
SHA-256 | ccc3c93435dc2cf6f740404e0f3468344e1a65dc1fc33ad4cbde80538cdac73e
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