gsd-2018-1000200
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
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).
Aliases
Aliases
CVE-2018-1000200


To clipboard 

{
  "GSD": {
    "alias": "CVE-2018-1000200",
    "description": "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\u0027s final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reaper\u0027s unmap_page_range() since the vma\u0027s VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked).",
    "id": "GSD-2018-1000200",
    "references": [
      "https://www.suse.com/security/cve/CVE-2018-1000200.html",
      "https://access.redhat.com/errata/RHSA-2018:2948",
      "https://ubuntu.com/security/CVE-2018-1000200",
      "https://advisories.mageia.org/CVE-2018-1000200.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2018-1000200"
      ],
      "details": "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\u0027s final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reaper\u0027s unmap_page_range() since the vma\u0027s VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked).",
      "id": "GSD-2018-1000200",
      "modified": "2023-12-13T01:22:27.756144Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.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": "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": "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\u0027s final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reaper\u0027s unmap_page_range() since the vma\u0027s 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": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "USN-3752-2",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/3752-2/"
          },
          {
            "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": "USN-3752-3",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/3752-3/"
          },
          {
            "name": "https://access.redhat.com/security/cve/cve-2018-1000200",
            "refsource": "CONFIRM",
            "url": "https://access.redhat.com/security/cve/cve-2018-1000200"
          },
          {
            "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\u0026m=152460926619256"
          },
          {
            "name": "RHSA-2018:2948",
            "refsource": "REDHAT",
            "url": "https://access.redhat.com/errata/RHSA-2018:2948"
          },
          {
            "name": "104397",
            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/104397"
          },
          {
            "name": "[linux-kernel] 20180417 [patch] mm, oom: fix concurrent munlock and oom reaper unmap",
            "refsource": "MLIST",
            "url": "https://marc.info/?l=linux-kernel\u0026m=152400522806945"
          },
          {
            "name": "USN-3752-1",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/3752-1/"
          },
          {
            "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"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:4.16:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:4.14:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:4.15:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2018-1000200"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "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\u0027s final thread calling exit_mmap(), which calls munlock_vma_pages_all() for mlocked vmas.This can happen synchronously with the oom reaper\u0027s unmap_page_range() since the vma\u0027s VM_LOCKED bit is cleared before munlocking (to determine if any other vmas share the memory and are mlocked)."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-476"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a",
              "refsource": "CONFIRM",
              "tags": [
                "Mitigation",
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a"
            },
            {
              "name": "https://access.redhat.com/security/cve/cve-2018-1000200",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://access.redhat.com/security/cve/cve-2018-1000200"
            },
            {
              "name": "[oss-security] 20180424 CVE-2018-1000200 (Linux): Bad memory access on oom kill of large mlocked process",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://seclists.org/oss-sec/2018/q2/67"
            },
            {
              "name": "[linux-kernel] 20180424 [patch v3 for-4.17] mm, oom: fix concurrent munlock and oom reaper unmap",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://marc.info/?l=linux-kernel\u0026m=152460926619256"
            },
            {
              "name": "[linux-kernel] 20180417 [patch] mm, oom: fix concurrent munlock and oom reaper unmap",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://marc.info/?l=linux-kernel\u0026m=152400522806945"
            },
            {
              "name": "104397",
              "refsource": "BID",
              "tags": [
                "Third Party Advisory",
                "VDB Entry"
              ],
              "url": "http://www.securityfocus.com/bid/104397"
            },
            {
              "name": "USN-3752-2",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "https://usn.ubuntu.com/3752-2/"
            },
            {
              "name": "USN-3752-1",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "https://usn.ubuntu.com/3752-1/"
            },
            {
              "name": "USN-3752-3",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "https://usn.ubuntu.com/3752-3/"
            },
            {
              "name": "RHSA-2018:2948",
              "refsource": "REDHAT",
              "tags": [],
              "url": "https://access.redhat.com/errata/RHSA-2018:2948"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 4.9,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 6.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2018-10-31T10:30Z",
      "publishedDate": "2018-06-05T13:29Z"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.