{
   "CVE_data_meta" : {
      "ASSIGNER" : "cve@mitre.org",
      "ID" : "CVE-2018-18281",
      "STATE" : "PUBLIC"
   },
   "affects" : {
      "vendor" : {
         "vendor_data" : [
            {
               "product" : {
                  "product_data" : [
                     {
                        "product_name" : "n/a",
                        "version" : {
                           "version_data" : [
                              {
                                 "version_value" : "n/a"
                              }
                           ]
                        }
                     }
                  ]
               },
               "vendor_name" : "n/a"
            }
         ]
      }
   },
   "data_format" : "MITRE",
   "data_type" : "CVE",
   "data_version" : "4.0",
   "description" : {
      "description_data" : [
         {
            "lang" : "eng",
            "value" : "Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19."
         }
      ]
   },
   "problemtype" : {
      "problemtype_data" : [
         {
            "description" : [
               {
                  "lang" : "eng",
                  "value" : "n/a"
               }
            ]
         }
      ]
   },
   "references" : {
      "reference_data" : [
         {
            "name" : "[oss-security] 20181029 Linux kernel: TLB flush happens too late on mremap (CVE-2018-18281; fixed in 4.9.135, 4.14.78, 4.18.16, 4.19)",
            "refsource" : "MLIST",
            "url" : "http://www.openwall.com/lists/oss-security/2018/10/29/5"
         },
         {
            "name" : "http://packetstormsecurity.com/files/150001/Linux-mremap-TLB-Flush-Too-Late.html",
            "refsource" : "MISC",
            "url" : "http://packetstormsecurity.com/files/150001/Linux-mremap-TLB-Flush-Too-Late.html"
         },
         {
            "name" : "https://bugs.chromium.org/p/project-zero/issues/detail?id=1695",
            "refsource" : "MISC",
            "url" : "https://bugs.chromium.org/p/project-zero/issues/detail?id=1695"
         },
         {
            "name" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.78",
            "refsource" : "CONFIRM",
            "url" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.78"
         },
         {
            "name" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.16",
            "refsource" : "CONFIRM",
            "url" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.16"
         },
         {
            "name" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.135",
            "refsource" : "CONFIRM",
            "url" : "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.135"
         },
         {
            "name" : "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eb66ae030829605d61fbef1909ce310e29f78821",
            "refsource" : "CONFIRM",
            "url" : "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eb66ae030829605d61fbef1909ce310e29f78821"
         },
         {
            "name" : "USN-3832-1",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3832-1/"
         },
         {
            "name" : "USN-3835-1",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3835-1/"
         },
         {
            "name" : "USN-3871-1",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3871-1/"
         },
         {
            "name" : "USN-3871-3",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3871-3/"
         },
         {
            "name" : "USN-3871-4",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3871-4/"
         },
         {
            "name" : "USN-3880-2",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3880-2/"
         },
         {
            "name" : "USN-3871-5",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3871-5/"
         },
         {
            "name" : "USN-3880-1",
            "refsource" : "UBUNTU",
            "url" : "https://usn.ubuntu.com/3880-1/"
         },
         {
            "name" : "105761",
            "refsource" : "BID",
            "url" : "http://www.securityfocus.com/bid/105761"
         },
         {
            "name" : "106503",
            "refsource" : "BID",
            "url" : "http://www.securityfocus.com/bid/106503"
         }
      ]
   }
}