CVE-2019-14284 (GCVE-0-2019-14284)

Vulnerability from cvelistv5 – Published: 2019-07-26 12:25 – Updated: 2024-08-05 00:12
VLAI
Summary
In the Linux kernel before 5.2.3, drivers/block/floppy.c allows a denial of service by setup_format_params division-by-zero. Two consecutive ioctls can trigger the bug: the first one should set the drive geometry with .sect and .rate values that make F_SECT_PER_TRACK be zero. Next, the floppy format operation should be called. It can be triggered by an unprivileged local user even when a floppy disk has not been inserted. NOTE: QEMU creates the floppy device by default.
Severity
6.2 (Medium)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
URL Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan… x_refsource_MISC
https://github.com/torvalds/linux/commit/f3554aeb… x_refsource_MISC
https://git.kernel.org/cgit/linux/kernel/git/torv… x_refsource_MISC
https://www.debian.org/security/2019/dsa-4495 vendor-advisoryx_refsource_DEBIAN
https://seclists.org/bugtraq/2019/Aug/13 mailing-listx_refsource_BUGTRAQ
https://seclists.org/bugtraq/2019/Aug/18 mailing-listx_refsource_BUGTRAQ
https://www.debian.org/security/2019/dsa-4497 vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://seclists.org/bugtraq/2019/Aug/26 mailing-listx_refsource_BUGTRAQ
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
http://packetstormsecurity.com/files/154059/Slack… x_refsource_MISC
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://usn.ubuntu.com/4117-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4114-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4115-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4116-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4118-1/ vendor-advisoryx_refsource_UBUNTU
https://security.netapp.com/advisory/ntap-2019090… x_refsource_CONFIRM
http://packetstormsecurity.com/files/154408/Kerne… x_refsource_MISC
http://packetstormsecurity.com/files/154951/Kerne… x_refsource_MISC
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        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "LOW",
            "cvssData": {
              "accessComplexity": "LOW",
              "accessVector": "LOCAL",
              "authentication": "NONE",
              "availabilityImpact": "PARTIAL",
              "baseScore": 2.1,
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
              "version": "2.0"
            },
            "exploitabilityScore": 3.9,
            "impactScore": 2.9,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ],
        "cvssMetricV30": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 6.2,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.0"
            },
            "exploitabilityScore": 2.5,
            "impactScore": 3.6,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2019-07-26T13:15:13.113",
      "references": [
        {
          "source": "cve@mitre.org",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00055.html"
        },
        {
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        },
        {
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          "url": "http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html"
        },
        {
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        {
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          "url": "https://www.debian.org/security/2019/dsa-4497"
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      ],
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-369"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "38844317-DEDF-4600-BA0E-C7D28D8EC200",
                    "versionEndExcluding": "5.2.3",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel before 5.2.3, drivers/block/floppy.c allows a denial of service by setup_format_params division-by-zero. Two consecutive ioctls can trigger the bug: the first one should set the drive geometry with .sect and .rate values that make F_SECT_PER_TRACK be zero. Next, the floppy format operation should be called. It can be triggered by an unprivileged local user even when a floppy disk has not been inserted. NOTE: QEMU creates the floppy device by default."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux anterior a versi\u00f3n 5.2.3, el archivo drivers/block/floppy.c, permite una denegaci\u00f3n de servicio mediante la divisi\u00f3n por cero de la funci\u00f3n setup_format_params. Dos ioctls consecutivos pueden desencadenar el error: el primero debe establecer la geometr\u00eda de la unidad con valores .sect y .rate que hacen que F_SECT_PER_TRACK sea cero. A continuaci\u00f3n, se debe llamar a la operaci\u00f3n de formato de disquete. Puede ser activado por un usuario local sin privilegios incluso cuando no se ha insertado un disquete. NOTA: QEMU crea el dispositivo de disquete de por defecto."
          }
        ],
        "id": "CVE-2019-14284",
        "lastModified": "2024-11-21T04:26:22.260",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "LOW",
              "cvssData": {
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                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 2.1,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
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                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 6.2,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 2.5,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2019-07-26T13:15:13.113",
        "references": [
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00055.html"
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          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.netapp.com/advisory/ntap-20190905-0002/"
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          {
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          },
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            "url": "https://usn.ubuntu.com/4117-1/"
          },
          {
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          },
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          },
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            "url": "https://www.debian.org/security/2019/dsa-4497"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-369"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:48:40+00:00",
      "cve": "CVE-2019-14284",
      "id": "CVE-2019-14284",
      "initial_release_date": "2019-07-26T00:00:00+00:00",
      "product_status:known_affected": "56",
      "product_status:known_not_affected": "48",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: denial of service in drivers/block/floppy.c by setup_format_params division-by-zero",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-14284.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-04T00:53:54Z",
      "cve": "CVE-2019-14284",
      "id": "CVE-2019-14284",
      "initial_release_date": "2023-02-15T04:09:58Z",
      "product_status:known_not_affected": "23",
      "product_status:recommended": "914",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2019-14284",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-14284.json",
      "version": "21"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.