ghsa-4r96-hw22-hhc7
Vulnerability from github
Published
2022-05-24 17:05
Modified
2024-03-21 03:33
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details

** DISPUTED ** An issue was discovered in ide_dma_cb() in hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest system can crash the QEMU process in the host system via a special SCSI_IOCTL_SEND_COMMAND. It hits an assertion that implies that the size of successful DMA transfers there must be a multiple of 512 (the size of a sector). NOTE: a member of the QEMU security team disputes the significance of this issue because a "privileged guest user has many ways to cause similar DoS effect, without triggering this assert."

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{
  "affected": [],
  "aliases": [
    "CVE-2019-20175"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-754"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-12-31T04:15:00Z",
    "severity": "MODERATE"
  },
  "details": "** DISPUTED ** An issue was discovered in ide_dma_cb() in hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest system can crash the QEMU process in the host system via a special SCSI_IOCTL_SEND_COMMAND. It hits an assertion that implies that the size of successful DMA transfers there must be a multiple of 512 (the size of a sector). NOTE: a member of the QEMU security team disputes the significance of this issue because a \"privileged guest user has many ways to cause similar DoS effect, without triggering this assert.\"",
  "id": "GHSA-4r96-hw22-hhc7",
  "modified": "2024-03-21T03:33:48Z",
  "published": "2022-05-24T17:05:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20175"
    },
    {
      "type": "WEB",
      "url": "https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg01651.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg03869.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg00597.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg02165.html"
    },
    {
      "type": "WEB",
      "url": "https://www.mail-archive.com/qemu-devel%40nongnu.org/msg667396.html"
    },
    {
      "type": "WEB",
      "url": "https://www.mail-archive.com/qemu-devel@nongnu.org/msg667396.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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