KVM: x86: Fix shadow paging use-after-free due to unexpected GFN

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                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/x86/kvm/mmu/mmu.c"
                    ],
                    "versions": [
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                            "versionType": "original_commit_for_fix"
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