{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "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."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/fork.c"
               ],
               "versions": [
                  {
                     "version": "8d9bfb260814",
                     "lessThan": "0c42f7e039ab",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8d9bfb260814",
                     "lessThan": "04b0c4191234",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8d9bfb260814",
                     "lessThan": "cec11fa2eb51",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8d9bfb260814",
                     "lessThan": "dd782da47076",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8d9bfb260814",
                     "lessThan": "abdb88dd272b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8d9bfb260814",
                     "lessThan": "35e351780fa9",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/fork.c"
               ],
               "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"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/0c42f7e039aba3de6d7dbf92da708e2b2ecba557"
            },
            {
               "url": "https://git.kernel.org/stable/c/04b0c41912349aff11a1bbaef6a722bd7fbb90ac"
            },
            {
               "url": "https://git.kernel.org/stable/c/cec11fa2eb512ebe3a459c185f4aca1d44059bbf"
            },
            {
               "url": "https://git.kernel.org/stable/c/dd782da470761077f4d1120e191f1a35787cda6e"
            },
            {
               "url": "https://git.kernel.org/stable/c/abdb88dd272bbeb93efe01d8e0b7b17e24af3a34"
            },
            {
               "url": "https://git.kernel.org/stable/c/35e351780fa9d8240dd6f7e4f245f9ea37e96c19"
            }
         ],
         "title": "fork: defer linking file vma until vma is fully initialized",
         "x_generator": {
            "engine": "bippy-7d53e8ef8be4"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-27022",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}