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ubuntu-cve-2021-3607
Vulnerability from osv_ubuntu
Published
2021-06-18 00:00
Modified
2025-09-08 16:46
Summary
Details

An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest due to improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Severity
6.0 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "qemu",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-kvm",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-common",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-data",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-gui",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-x86-microvm",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-system-x86-xen",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-user",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-user-static",
            "binary_version": "1:4.2-3ubuntu6.17"
          },
          {
            "binary_name": "qemu-utils",
            "binary_version": "1:4.2-3ubuntu6.17"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "qemu",
        "purl": "pkg:deb/ubuntu/qemu@1:4.2-3ubuntu6.17?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:4.2-3ubuntu6.17"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:4.0+dfsg-0ubuntu9",
        "1:4.0+dfsg-0ubuntu10",
        "1:4.2-1ubuntu1",
        "1:4.2-1ubuntu2",
        "1:4.2-3ubuntu1",
        "1:4.2-3ubuntu2",
        "1:4.2-3ubuntu3",
        "1:4.2-3ubuntu4",
        "1:4.2-3ubuntu5",
        "1:4.2-3ubuntu6",
        "1:4.2-3ubuntu6.1",
        "1:4.2-3ubuntu6.2",
        "1:4.2-3ubuntu6.3",
        "1:4.2-3ubuntu6.4",
        "1:4.2-3ubuntu6.5",
        "1:4.2-3ubuntu6.6",
        "1:4.2-3ubuntu6.7",
        "1:4.2-3ubuntu6.8",
        "1:4.2-3ubuntu6.9",
        "1:4.2-3ubuntu6.10",
        "1:4.2-3ubuntu6.11",
        "1:4.2-3ubuntu6.12",
        "1:4.2-3ubuntu6.14",
        "1:4.2-3ubuntu6.15",
        "1:4.2-3ubuntu6.16"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "qemu",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-common",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-data",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-gui",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-x86-microvm",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-system-x86-xen",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-user",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-user-static",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          },
          {
            "binary_name": "qemu-utils",
            "binary_version": "1:6.0+dfsg-2expubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "qemu",
        "purl": "pkg:deb/ubuntu/qemu@1:6.0+dfsg-2expubuntu1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:6.0+dfsg-2expubuntu1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [],
  "details": "An integer overflow was found in the QEMU implementation of VMWare\u0027s paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a \"PVRDMA_REG_DSRHIGH\" write from the guest due to improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.",
  "id": "UBUNTU-CVE-2021-3607",
  "modified": "2025-09-08T16:46:45Z",
  "published": "2021-06-18T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3607"
    },
    {
      "type": "REPORT",
      "url": "https://lists.gnu.org/archive/html/qemu-devel/2021-06/msg07925.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5010-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-3607"
    }
  ],
  "related": [
    "USN-5010-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-3607"
  ]
}



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