{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: VMX: Don't use vcpu->run->internal.ndata as an array index\n\n__vmx_handle_exit() uses vcpu->run->internal.ndata as an index for\nan array access.  Since vcpu->run is (can be) mapped to a user address\nspace with a writer permission, the 'ndata' could be updated by the\nuser process at anytime (the user process can set it to outside the\nbounds of the array).\nSo, it is not safe that __vmx_handle_exit() uses the 'ndata' that way."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "versions": [
                  {
                     "version": "1aa561b1a4c0",
                     "lessThan": "7f64753835a7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1aa561b1a4c0",
                     "lessThan": "ce541d7b5956",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1aa561b1a4c0",
                     "lessThan": "04c4f2ee3f68",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "versions": [
                  {
                     "version": "5.9",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.9",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.32",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.11.16",
                     "lessThanOrEqual": "5.11.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.12",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/7f64753835a78c7d2cc2932a5808ef3b7fd4c050"
            },
            {
               "url": "https://git.kernel.org/stable/c/ce541d7b59566a0d94c7c99bfb5d34b050e6af70"
            },
            {
               "url": "https://git.kernel.org/stable/c/04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a"
            }
         ],
         "title": "KVM: VMX: Don't use vcpu->run->internal.ndata as an array index",
         "x_generator": {
            "engine": "bippy-c298863b1525"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-46907",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}