CVE-2023-31355

Summary

CVE-2023-31355 is a vulnerability affecting SNP firmware that allows for improper restriction of write operations. This issue can enable a malicious hypervisor to overwrite a guest's UMC seed, potentially leading to the reading of memory from a decommissioned guest. This vulnerability could result in significant data exposure if exploited, making it a potential threat to organizations using SNP firmware. It is crucial that organizations apply the necessary patches to mitigate this risk and secure their systems against potential attacks.

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