Audited Hypervisor Kernel Escapes in Regulated Environments — Ring 0 as the True Attack Surface

The author describes a recent analysis of hypervisor kernel vulnerabilities in regulated environments, highlighting that guest→host escape chains frequently exploit the host kernel (Ring 0). Three recurring primitives are identified: unsigned drivers/DKOM, memory corruption bypassing KASLR, and kernel write primitives. Mitigations like HVCI/VBS are mentioned as effective controls but with performance trade-offs. The author seeks feedback on implementing strict kernel lockdowns and the associated compatibility or performance constraints.