CVE-2026-53360

The CVE affects the Linux kernel KVM-SEV/SNP path: when GHCB v2+ is in use, an OOB/heap-privacy flaw arises because end_entry is validated only against VMGEXIT_PSC_MAX_COUNT (253) instead of the actual buffer size, allowing a guest to read/write adjacent kmalloc-cg-32 objects via VMGEXITs. This c...