{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68081",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.367Z",
        "datePublished": "2026-08-08T09:17:44.795Z",
        "dateUpdated": "2026-10-21T12:43:27.698Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:43:27.698Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to invalid guest state\n\nPut all vmcs12 pages if KVM synthesizes a nested VM-Exit due to invalid\nguest while emulating VMLAUNCH or VMRESUME.  The invalid guest state path\ndoesn't use nested_vmx_vmexit() as that API is intended to be used if and\nonly if L2 is active, and the open coded equivalent neglects to put the\nvmcs12 pages.  Failure to put the vmcs12 pages leaks any pinned pages\n(and/or mappings) if L1 retries VMLAUNCH/VMRESUME.\n\nNote, the !from_vmenter scenario doesn't suffer the same problem, as\nvmx_get_nested_state_pages() only gets/pins/maps the vmcs12 pages if L2 is\nactive, i.e. if a \"full\" VM-Exit is guaranteed before KVM will retry\ngetting vmcs12 pages."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/x86/kvm/vmx/nested.c"
                    ],
                    "versions": [
                        {
                            "version": "96c66e87deeeb3cc78a3b82a1de8e365eec206c1",
                            "lessThan": "a7bf4f5b19965e4466040ad6b24919c1ed326a84",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "96c66e87deeeb3cc78a3b82a1de8e365eec206c1",
                            "lessThan": "f42669f931a6f45e5918cf5e99989b9a6c65e655",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "96c66e87deeeb3cc78a3b82a1de8e365eec206c1",
                            "lessThan": "7996013b85687034d2e820cef94d6404192e3a3d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "96c66e87deeeb3cc78a3b82a1de8e365eec206c1",
                            "lessThan": "2c87a087c20632d68920272173b5d7c47f9bcf70",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "96c66e87deeeb3cc78a3b82a1de8e365eec206c1",
                            "lessThan": "2f2312c422fd2695da772cecb30c69994b795964",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/x86/kvm/vmx/nested.c"
                    ],
                    "versions": [
                        {
                            "version": "5.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.114",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "6.12.114"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a7bf4f5b19965e4466040ad6b24919c1ed326a84"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f42669f931a6f45e5918cf5e99989b9a6c65e655"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7996013b85687034d2e820cef94d6404192e3a3d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2c87a087c20632d68920272173b5d7c47f9bcf70"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2f2312c422fd2695da772cecb30c69994b795964"
                }
            ],
            "title": "KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to invalid guest state",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}