{
   "CVE_data_meta" : {
      "ASSIGNER" : "kurt@seifried.org",
      "DATE_ASSIGNED" : "2018-04-17T12:00:00",
      "DATE_REQUESTED" : "2018-04-17T14:00:00",
      "ID" : "CVE-2018-1000200",
      "REQUESTER" : "rientjes@google.com",
      "STATE" : "PUBLIC"
   },
   "affects" : {
      "vendor" : {
         "vendor_data" : [
            {
               "product" : {
                  "product_data" : [
                     {
                        "product_name" : "Linux Kernel",
                        "version" : {
                           "version_data" : [
                              {
                                 "version_value" : "4.14, 4.15, and 4.16"
                              }
                           ]
                        }
                     }
                  ]
               },
               "vendor_name" : "Linux Kernel"
            }
         ]
      }
   },
   "data_format" : "MITRE",
   "data_type" : "CVE",
   "data_version" : "4.0",
   "description" : {
      "description_data" : [
         {
            "lang" : "eng",
            "value" : "The Linux Kernel versions 4.14, 4.15, and 4.16 has a null pointer dereference which can result in an out of memory (OOM) killing of large mlocked processes. The issue arises from an oom killed process's final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reaper's unmap_page_range() since the vma's VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked)."
         }
      ]
   },
   "problemtype" : {
      "problemtype_data" : [
         {
            "description" : [
               {
                  "lang" : "eng",
                  "value" : "NULL Pointer Dereference"
               }
            ]
         }
      ]
   },
   "references" : {
      "reference_data" : [
         {
            "name" : "[linux-kernel] 20180417 [patch] mm, oom: fix concurrent munlock and oom reaper unmap",
            "refsource" : "MLIST",
            "url" : "https://marc.info/?l=linux-kernel&m=152400522806945"
         },
         {
            "name" : "[linux-kernel] 20180424 [patch v3 for-4.17] mm, oom: fix concurrent munlock and oom reaper unmap",
            "refsource" : "MLIST",
            "url" : "https://marc.info/?l=linux-kernel&m=152460926619256"
         },
         {
            "name" : "[oss-security] 20180424 CVE-2018-1000200 (Linux): Bad memory access on oom kill of large mlocked process",
            "refsource" : "MLIST",
            "url" : "http://seclists.org/oss-sec/2018/q2/67"
         },
         {
            "name" : "https://access.redhat.com/security/cve/cve-2018-1000200",
            "refsource" : "CONFIRM",
            "url" : "https://access.redhat.com/security/cve/cve-2018-1000200"
         },
         {
            "name" : "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a",
            "refsource" : "CONFIRM",
            "url" : "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a"
         },
         {
            "name" : "RHSA-2018:2948",
            "refsource" : "REDHAT",
            "url" : "https://access.redhat.com/errata/RHSA-2018:2948"
         },
         {
            "name" : "USN-3752-1",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3752-1/"
         },
         {
            "name" : "USN-3752-2",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3752-2/"
         },
         {
            "name" : "USN-3752-3",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3752-3/"
         },
         {
            "name" : "104397",
            "refsource" : "BID",
            "url" : "http://www.securityfocus.com/bid/104397"
         }
      ]
   }
}