cvelist/2021/29xxx/CVE-2021-29657.json

{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-29657",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in nested_svm_vmrun."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "name": "http://packetstormsecurity.com/files/163324/KVM-nested_svm_vmrun-Double-Fetch.html",
                "url": "http://packetstormsecurity.com/files/163324/KVM-nested_svm_vmrun-Double-Fetch.html"
            },
            {
                "refsource": "MISC",
                "name": "https://bugs.chromium.org/p/project-zero/issues/detail?id=2177",
                "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=2177"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a58d9166a756a0f4a6618e4f593232593d6df134",
                "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a58d9166a756a0f4a6618e4f593232593d6df134"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.12",
                "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.12"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20210902-0008/",
                "url": "https://security.netapp.com/advisory/ntap-20210902-0008/"
            }
        ]
    }
}