{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-27022",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfork: defer linking file vma until vma is fully initialized\n\nThorvald reported a WARNING [1]. And the root cause is below race:\n\n CPU 1\t\t\t\t\tCPU 2\n fork\t\t\t\t\thugetlbfs_fallocate\n  dup_mmap\t\t\t\t hugetlbfs_punch_hole\n   i_mmap_lock_write(mapping);\n   vma_interval_tree_insert_after -- Child vma is visible through i_mmap tree.\n   i_mmap_unlock_write(mapping);\n   hugetlb_dup_vma_private -- Clear vma_lock outside i_mmap_rwsem!\n\t\t\t\t\t i_mmap_lock_write(mapping);\n   \t\t\t\t\t hugetlb_vmdelete_list\n\t\t\t\t\t  vma_interval_tree_foreach\n\t\t\t\t\t   hugetlb_vma_trylock_write -- Vma_lock is cleared.\n   tmp->vm_ops->open -- Alloc new vma_lock outside i_mmap_rwsem!\n\t\t\t\t\t   hugetlb_vma_unlock_write -- Vma_lock is assigned!!!\n\t\t\t\t\t i_mmap_unlock_write(mapping);\n\nhugetlb_dup_vma_private() and hugetlb_vm_op_open() are called outside\ni_mmap_rwsem lock while vma lock can be used in the same time.  Fix this\nby deferring linking file vma until vma is fully initialized.  Those vmas\nshould be initialized first before they can be used."
            }
        ]
    },
    "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": "8d9bfb260814",
                                            "version_value": "0c42f7e039ab"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "6.1",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "6.1",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.1.90",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.1.95",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.6.30",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.6.35",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.8.8",
                                                        "lessThanOrEqual": "6.8.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.9",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/0c42f7e039aba3de6d7dbf92da708e2b2ecba557",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/0c42f7e039aba3de6d7dbf92da708e2b2ecba557"
            },
            {
                "url": "https://git.kernel.org/stable/c/04b0c41912349aff11a1bbaef6a722bd7fbb90ac",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/04b0c41912349aff11a1bbaef6a722bd7fbb90ac"
            },
            {
                "url": "https://git.kernel.org/stable/c/cec11fa2eb512ebe3a459c185f4aca1d44059bbf",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/cec11fa2eb512ebe3a459c185f4aca1d44059bbf"
            },
            {
                "url": "https://git.kernel.org/stable/c/dd782da470761077f4d1120e191f1a35787cda6e",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/dd782da470761077f4d1120e191f1a35787cda6e"
            },
            {
                "url": "https://git.kernel.org/stable/c/abdb88dd272bbeb93efe01d8e0b7b17e24af3a34",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/abdb88dd272bbeb93efe01d8e0b7b17e24af3a34"
            },
            {
                "url": "https://git.kernel.org/stable/c/35e351780fa9d8240dd6f7e4f245f9ea37e96c19",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/35e351780fa9d8240dd6f7e4f245f9ea37e96c19"
            }
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        "engine": "bippy-7d53e8ef8be4"
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