What: /sys/firmware/sev/vulnerabilities/supported_mitigations Date: June 2026 Contact: linux-crypto@vger.kernel.org Description: Read-only interface that reports the vector of SEV-SNP firmware vulnerability mitigations supported by the firmware. What: /sys/firmware/sev/vulnerabilities/verified_mitigations Date: June 2026 Contact: linux-crypto@vger.kernel.org Description: Read/write interface that reports the vector of SEV-SNP firmware vulnerability mitigations already verified by the firmware. Writing a vector value requests the firmware to VERIFY the corresponding mitigation bit(s). The list of supported mitigations and the meaning of each vector bit are both platform- and bug-specific and are published as part of the AMD Security Bulletin.