gsd-2017-15126
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put().
Aliases
Aliases
CVE-2017-15126


To clipboard 

{
  "GSD": {
    "alias": "CVE-2017-15126",
    "description": "A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put().",
    "id": "GSD-2017-15126",
    "references": [
      "https://www.suse.com/security/cve/CVE-2017-15126.html",
      "https://access.redhat.com/errata/RHSA-2018:1062",
      "https://access.redhat.com/errata/RHSA-2018:0676",
      "https://linux.oracle.com/cve/CVE-2017-15126.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2017-15126"
      ],
      "details": "A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put().",
      "id": "GSD-2017-15126",
      "modified": "2023-12-13T01:20:59.074004Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2017-15126",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux Kernel before 4.13.6",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "Linux Kernel before 4.13.6"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put()."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-119",
                "lang": "eng",
                "value": "CWE-119"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://access.redhat.com/errata/RHSA-2018:0676",
            "refsource": "MISC",
            "url": "https://access.redhat.com/errata/RHSA-2018:0676"
          },
          {
            "name": "https://access.redhat.com/errata/RHSA-2018:1062",
            "refsource": "MISC",
            "url": "https://access.redhat.com/errata/RHSA-2018:1062"
          },
          {
            "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252",
            "refsource": "MISC",
            "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252"
          },
          {
            "name": "http://www.securityfocus.com/bid/102516",
            "refsource": "MISC",
            "url": "http://www.securityfocus.com/bid/102516"
          },
          {
            "name": "https://access.redhat.com/security/cve/CVE-2017-15126",
            "refsource": "MISC",
            "url": "https://access.redhat.com/security/cve/CVE-2017-15126"
          },
          {
            "name": "https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252",
            "refsource": "MISC",
            "url": "https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252"
          },
          {
            "name": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6",
            "refsource": "MISC",
            "url": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6"
          },
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1523481",
            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1523481"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6AA05A17-8B2B-40D5-A8FD-3B328291D06B",
                    "versionEndExcluding": "4.13.6",
                    "versionStartIncluding": "4.11",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "descriptions": [
          {
            "lang": "en",
            "value": "A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put()."
          },
          {
            "lang": "es",
            "value": "Se ha encontrado un fallo de uso de memoria previamente liberada en fs/userfaultfd.c en el kernel de Linux en versiones anteriores a la 4.13.6. El problema se relaciona con la gesti\u00f3n del error de bifurcaci\u00f3n al gestionar mensajes de evento. El error al bifurcar correctamente puede llevar a una situaci\u00f3n en la que un evento fork se eliminar\u00e1 de una lista ya liberada de eventos con userfaultfd_ctx_put()."
          }
        ],
        "id": "CVE-2017-15126",
        "lastModified": "2024-02-05T19:52:32.133",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 9.3,
                "confidentialityImpact": "COMPLETE",
                "integrityImpact": "COMPLETE",
                "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 10.0,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2018-01-14T06:29:00.217",
        "references": [
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/102516"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2018:0676"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2018:1062"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2017-15126"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Issue Tracking",
              "Third Party Advisory"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1523481"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-119"
              }
            ],
            "source": "secalert@redhat.com",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Secondary"
          }
        ]
      }
    }
  }
}


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