ghsa-ggpp-fxg5-wp87
Vulnerability from github
Published
2022-05-24 19:03
Modified
2022-05-24 19:03
Severity ?
6.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Details

A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-20196"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-05-26T22:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.",
  "id": "GHSA-ggpp-fxg5-wp87",
  "modified": "2022-05-24T19:03:33Z",
  "published": "2022-05-24T19:03:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20196"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2022:0325"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2022:0397"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2022:1759"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2021-20196"
    },
    {
      "type": "WEB",
      "url": "https://bugs.launchpad.net/qemu/+bug/1912780"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1919210"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210708-0004"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2021/01/28/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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