cvelist/2024/50xxx/CVE-2024-50115.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-50115",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory\n\nIgnore nCR3[4:0] when loading PDPTEs from memory for nested SVM, as bits\n4:0 of CR3 are ignored when PAE paging is used, and thus VMRUN doesn't\nenforce 32-byte alignment of nCR3.\n\nIn the absolute worst case scenario, failure to ignore bits 4:0 can result\nin an out-of-bounds read, e.g. if the target page is at the end of a\nmemslot, and the VMM isn't using guard pages.\n\nPer the APM:\n\n  The CR3 register points to the base address of the page-directory-pointer\n  table. The page-directory-pointer table is aligned on a 32-byte boundary,\n  with the low 5 address bits 4:0 assumed to be 0.\n\nAnd the SDM's much more explicit:\n\n  4:0    Ignored\n\nNote, KVM gets this right when loading PDPTRs, it's only the nSVM flow\nthat is broken."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "e4e517b4be01",
                                            "version_value": "76ce386feb14"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "3.2",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "3.2",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.10.229",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.15.170",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.1.115",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.6.59",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.11.6",
                                                        "lessThanOrEqual": "6.11.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.12",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/76ce386feb14ec9a460784fcd495d8432acce7a5",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/76ce386feb14ec9a460784fcd495d8432acce7a5"
            },
            {
                "url": "https://git.kernel.org/stable/c/58cb697d80e669c56197f703e188867c8c54c494",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/58cb697d80e669c56197f703e188867c8c54c494"
            },
            {
                "url": "https://git.kernel.org/stable/c/6876793907cbe19d42e9edc8c3315a21e06c32ae",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/6876793907cbe19d42e9edc8c3315a21e06c32ae"
            },
            {
                "url": "https://git.kernel.org/stable/c/2c4adc9b192a0815fe58a62bc0709449416cc884",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/2c4adc9b192a0815fe58a62bc0709449416cc884"
            },
            {
                "url": "https://git.kernel.org/stable/c/426682afec71ea3f889b972d038238807b9443e4",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/426682afec71ea3f889b972d038238807b9443e4"
            },
            {
                "url": "https://git.kernel.org/stable/c/f559b2e9c5c5308850544ab59396b7d53cfc67bd",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/f559b2e9c5c5308850544ab59396b7d53cfc67bd"
            }
        ]
    },
    "generator": {
        "engine": "bippy-8e903de6a542"
    }
}