CVE-2018-1000200 (GCVE-0-2018-1000200)

Vulnerability from cvelistv5 – Published: 2018-06-05 13:00 – Updated: 2024-08-05 12:40
VLAI
Summary
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).
Severity
5.5 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2251 records in the last 180 days details
References
URL Tags
https://usn.ubuntu.com/3752-2/ vendor-advisoryx_refsource_UBUNTU
https://git.kernel.org/pub/scm/linux/kernel/git/t… x_refsource_CONFIRM
https://usn.ubuntu.com/3752-3/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/security/cve/cve-2018-1000200 x_refsource_CONFIRM
https://marc.info/?l=linux-kernel&m=152460926619256 mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2018:2948 vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/104397 vdb-entryx_refsource_BID
https://marc.info/?l=linux-kernel&m=152400522806945 mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3752-1/ vendor-advisoryx_refsource_UBUNTU
http://seclists.org/oss-sec/2018/q2/67 mailing-listx_refsource_MLIST
Date Public
2018-04-24 00:00
Show details on NVD website
To clipboard 

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            "value": "Las versiones 4.14, 4.15 y 4.16 del kernel de Linux tienen una desreferencia de puntero NULL que puede resultar en agotamiento de memoria (OOM), cerrando grandes procesos bloqueados. El problema surge del hilo final de un proceso finalizado por un OOM que llama a exit_mmap(), el cual llama a munlock_vma_pages_all() para mlocked vmas. Esto puede ocurrir en sincron\u00eda con el rango unmap_page_range() del oom reaper ya que el bit VM_LOCKED del vma se borra antes del munlocking (para determinar si otros vmas comparten la memoria y son bloqueados)."
          }
        ],
        "id": "CVE-2018-1000200",
        "lastModified": "2024-11-21T03:39:55.233",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "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,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "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,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2018-06-05T13:29:00.297",
        "references": [
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "http://seclists.org/oss-sec/2018/q2/67"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/104397"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://access.redhat.com/errata/RHSA-2018:2948"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://access.redhat.com/security/cve/cve-2018-1000200"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mitigation",
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://marc.info/?l=linux-kernel\u0026m=152400522806945"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://marc.info/?l=linux-kernel\u0026m=152460926619256"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://usn.ubuntu.com/3752-1/"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://usn.ubuntu.com/3752-2/"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://usn.ubuntu.com/3752-3/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "http://seclists.org/oss-sec/2018/q2/67"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/104397"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://access.redhat.com/errata/RHSA-2018:2948"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
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            ],
            "url": "https://access.redhat.com/security/cve/cve-2018-1000200"
          },
          {
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            "tags": [
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              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=27ae357fa82be5ab73b2ef8d39dcb8ca2563483a"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
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              "Third Party Advisory"
            ],
            "url": "https://marc.info/?l=linux-kernel\u0026m=152400522806945"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
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              "Third Party Advisory"
            ],
            "url": "https://marc.info/?l=linux-kernel\u0026m=152460926619256"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://usn.ubuntu.com/3752-1/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://usn.ubuntu.com/3752-2/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://usn.ubuntu.com/3752-3/"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T06:46:19+00:00",
      "cve": "CVE-2018-1000200",
      "id": "CVE-2018-1000200",
      "initial_release_date": "2018-04-24T00:00:00+00:00",
      "product_status:fixed": "26",
      "product_status:known_not_affected": "87",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: NULL pointer dereference on OOM kill of large mlocked process",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-1000200.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T08:33:24Z",
      "cve": "CVE-2018-1000200",
      "id": "CVE-2018-1000200",
      "initial_release_date": "2023-02-15T04:20:04Z",
      "product_status:known_affected": "4",
      "product_status:known_not_affected": "211",
      "product_status:recommended": "335",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2018-1000200",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2018-1000200.json",
      "version": "17"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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