CVE-2014-3940 (GCVE-0-2014-3940)

Vulnerability from cvelistv5 – Published: 2014-06-05 17:00 – Updated: 2024-08-06 10:57
VLAI
Summary
The Linux kernel through 3.14.5 does not properly consider the presence of hugetlb entries, which allows local users to cause a denial of service (memory corruption or system crash) by accessing certain memory locations, as demonstrated by triggering a race condition via numa_maps read operations during hugepage migration, related to fs/proc/task_mmu.c and mm/mempolicy.c.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2266 records in the last 180 days details
References
URL Tags
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http://secunia.com/advisories/59011 third-party-advisoryx_refsource_SECUNIA
https://lkml.org/lkml/2014/3/18/784 mailing-listx_refsource_MLIST
https://support.f5.com/kb/en-us/solutions/public/… x_refsource_CONFIRM
http://rhn.redhat.com/errata/RHSA-2015-0290.html vendor-advisoryx_refsource_REDHAT
http://www.openwall.com/lists/oss-security/2014/06/02/5 mailing-listx_refsource_MLIST
http://www.securityfocus.com/bid/67786 vdb-entryx_refsource_BID
http://secunia.com/advisories/61310 third-party-advisoryx_refsource_SECUNIA
http://rhn.redhat.com/errata/RHSA-2015-1272.html vendor-advisoryx_refsource_REDHAT
Date Public
2014-03-18 00:00
Show details on NVD website
To clipboard 

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                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:3.14:rc8:*:*:*:*:*:*",
                    "matchCriteriaId": "055557BE-1FE9-45F5-8A95-F8D3C9B031E4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:3.14.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "742641DA-1CAE-4156-95F3-367793713696",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:3.14.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A3EBDD96-92E4-429F-A697-14364CF68EEC",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:3.14.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "998AC0EF-FC56-4F8F-B9B2-1A45C80C2231",
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                  {
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                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The Linux kernel through 3.14.5 does not properly consider the presence of hugetlb entries, which allows local users to cause a denial of service (memory corruption or system crash) by accessing certain memory locations, as demonstrated by triggering a race condition via numa_maps read operations during hugepage migration, related to fs/proc/task_mmu.c and mm/mempolicy.c."
          },
          {
            "lang": "es",
            "value": "El kernel de Linux hasta 3.14.5 no considera debidamente la presencia de entradas hugetlb, lo que permite a usuarios locales causar una denegaci\u00f3n de servicio (corrupci\u00f3n de memoria o ca\u00edda de sistema) mediante el acceso a ciertas localizaciones de memoria, tal y como fue demostrado mediante el aprovechamiento de una condici\u00f3n de carrera a trav\u00e9s de operaciones de lectura numa_maps durante la migraci\u00f3n a hugepage, relacionado con fs/proc/task_mmu.c y mm/mempolicy.c."
          }
        ],
        "id": "CVE-2014-3940",
        "lastModified": "2026-05-06T22:30:45.220",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "HIGH",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 4.0,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:L/AC:H/Au:N/C:N/I:N/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 1.9,
              "impactScore": 6.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2014-06-05T17:55:07.573",
        "references": [
          {
            "source": "cve@mitre.org",
            "url": "http://rhn.redhat.com/errata/RHSA-2015-0290.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://rhn.redhat.com/errata/RHSA-2015-1272.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://secunia.com/advisories/59011"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://secunia.com/advisories/61310"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.openwall.com/lists/oss-security/2014/06/02/5"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.securityfocus.com/bid/67786"
          },
          {
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            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1104097"
          },
          {
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            "url": "https://lkml.org/lkml/2014/3/18/784"
          },
          {
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            "url": "https://support.f5.com/kb/en-us/solutions/public/15000/600/sol15685.html"
          },
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            "url": "http://secunia.com/advisories/59011"
          },
          {
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            "url": "http://secunia.com/advisories/61310"
          },
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          {
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            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1104097"
          },
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            "url": "https://support.f5.com/kb/en-us/solutions/public/15000/600/sol15685.html"
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        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-362"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T12:31:56+00:00",
      "cve": "CVE-2014-3940",
      "id": "CVE-2014-3940",
      "initial_release_date": "2014-03-18T00:00:00+00:00",
      "product_status:fixed": "872",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Kernel: missing check during hugepage migration",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2014/cve-2014-3940.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-09-02T09:01:29Z",
      "cve": "CVE-2014-3940",
      "id": "CVE-2014-3940",
      "initial_release_date": "2023-02-15T05:28:13Z",
      "product_status:recommended": "100",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2014-3940",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2014-3940.json",
      "version": "11"
    }
  }
}



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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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