ubuntu-cve-2016-9381
Vulnerability from osv_ubuntu
Published
2017-01-23 00:00
Modified
2026-04-22 07:38
Summary
Details

Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.

Severity
7.5 (High)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
7.5 (High)
CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "qemu",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-common",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-guest-agent",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-keymaps",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-kvm",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-system",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-system-aarch64",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-system-arm",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-system-common",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-system-mips",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-system-misc",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-system-ppc",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-system-sparc",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-system-x86",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-user",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-user-static",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          },
          {
            "binary_name": "qemu-utils",
            "binary_version": "2.0.0+dfsg-2ubuntu1.33"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "qemu",
        "purl": "pkg:deb/ubuntu/qemu@2.0.0+dfsg-2ubuntu1.33?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.0+dfsg-2ubuntu1.33"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.5.0+dfsg-3ubuntu5",
        "1.5.0+dfsg-3ubuntu6",
        "1.6.0+dfsg-2ubuntu1",
        "1.6.0+dfsg-2ubuntu2",
        "1.6.0+dfsg-2ubuntu3",
        "1.6.0+dfsg-2ubuntu4",
        "1.7.0+dfsg-2ubuntu1",
        "1.7.0+dfsg-2ubuntu2",
        "1.7.0+dfsg-2ubuntu3",
        "1.7.0+dfsg-2ubuntu4",
        "1.7.0+dfsg-2ubuntu5",
        "1.7.0+dfsg-2ubuntu7",
        "1.7.0+dfsg-2ubuntu8",
        "1.7.0+dfsg-2ubuntu9",
        "1.7.0+dfsg-3ubuntu1~ppa1",
        "1.7.0+dfsg-3ubuntu1",
        "1.7.0+dfsg-3ubuntu2",
        "1.7.0+dfsg-3ubuntu3",
        "1.7.0+dfsg-3ubuntu4",
        "1.7.0+dfsg-3ubuntu5",
        "1.7.0+dfsg-3ubuntu6",
        "1.7.0+dfsg-3ubuntu7",
        "2.0.0~rc1+dfsg-0ubuntu1",
        "2.0.0~rc1+dfsg-0ubuntu2",
        "2.0.0~rc1+dfsg-0ubuntu3",
        "2.0.0~rc1+dfsg-0ubuntu3.1",
        "2.0.0+dfsg-2ubuntu1",
        "2.0.0+dfsg-2ubuntu1.1",
        "2.0.0+dfsg-2ubuntu1.2",
        "2.0.0+dfsg-2ubuntu1.3",
        "2.0.0+dfsg-2ubuntu1.5",
        "2.0.0+dfsg-2ubuntu1.6",
        "2.0.0+dfsg-2ubuntu1.7",
        "2.0.0+dfsg-2ubuntu1.8",
        "2.0.0+dfsg-2ubuntu1.9",
        "2.0.0+dfsg-2ubuntu1.10",
        "2.0.0+dfsg-2ubuntu1.11",
        "2.0.0+dfsg-2ubuntu1.13",
        "2.0.0+dfsg-2ubuntu1.14",
        "2.0.0+dfsg-2ubuntu1.15",
        "2.0.0+dfsg-2ubuntu1.16",
        "2.0.0+dfsg-2ubuntu1.17",
        "2.0.0+dfsg-2ubuntu1.18",
        "2.0.0+dfsg-2ubuntu1.19",
        "2.0.0+dfsg-2ubuntu1.20",
        "2.0.0+dfsg-2ubuntu1.21",
        "2.0.0+dfsg-2ubuntu1.22",
        "2.0.0+dfsg-2ubuntu1.24",
        "2.0.0+dfsg-2ubuntu1.25",
        "2.0.0+dfsg-2ubuntu1.26",
        "2.0.0+dfsg-2ubuntu1.27",
        "2.0.0+dfsg-2ubuntu1.28",
        "2.0.0+dfsg-2ubuntu1.29",
        "2.0.0+dfsg-2ubuntu1.30",
        "2.0.0+dfsg-2ubuntu1.31",
        "2.0.0+dfsg-2ubuntu1.32"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libxen-4.4",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "libxen-ocaml",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "libxenstore3.0",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xen-hypervisor-4.1-amd64",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xen-hypervisor-4.3-amd64",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xen-hypervisor-4.3-armhf",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xen-hypervisor-4.4-amd64",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xen-hypervisor-4.4-arm64",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xen-hypervisor-4.4-armhf",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xen-system-amd64",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xen-system-arm64",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xen-system-armhf",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xen-utils-4.4",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xen-utils-common",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          },
          {
            "binary_name": "xenstore-utils",
            "binary_version": "4.4.2-0ubuntu0.14.04.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "xen",
        "purl": "pkg:deb/ubuntu/xen@4.4.2-0ubuntu0.14.04.9?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.4.2-0ubuntu0.14.04.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3.0-1ubuntu1",
        "4.3.0-1ubuntu2",
        "4.3.0-1ubuntu3",
        "4.3.0-1ubuntu4",
        "4.3.0-1ubuntu5",
        "4.4.0-0ubuntu3",
        "4.4.0-0ubuntu4",
        "4.4.0-0ubuntu5",
        "4.4.0-0ubuntu5.1",
        "4.4.0-0ubuntu5.2",
        "4.4.1-0ubuntu0.14.04.1",
        "4.4.1-0ubuntu0.14.04.2",
        "4.4.1-0ubuntu0.14.04.3",
        "4.4.1-0ubuntu0.14.04.4",
        "4.4.1-0ubuntu0.14.04.5",
        "4.4.1-0ubuntu0.14.04.6",
        "4.4.2-0ubuntu0.14.04.1",
        "4.4.2-0ubuntu0.14.04.2",
        "4.4.2-0ubuntu0.14.04.3",
        "4.4.2-0ubuntu0.14.04.4",
        "4.4.2-0ubuntu0.14.04.5",
        "4.4.2-0ubuntu0.14.04.6",
        "4.4.2-0ubuntu0.14.04.7"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "qemu",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-block-extra",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-guest-agent",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-kvm",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-system",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-system-aarch64",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-system-arm",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-system-common",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-system-mips",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-system-misc",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-system-ppc",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-system-s390x",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-system-sparc",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-system-x86",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-user",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-user-binfmt",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-user-static",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          },
          {
            "binary_name": "qemu-utils",
            "binary_version": "1:2.5+dfsg-5ubuntu10.11"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "qemu",
        "purl": "pkg:deb/ubuntu/qemu@1:2.5+dfsg-5ubuntu10.11?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:2.5+dfsg-5ubuntu10.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.3+dfsg-5ubuntu9",
        "1:2.3+dfsg-5ubuntu10",
        "1:2.4+dfsg-4ubuntu1",
        "1:2.4+dfsg-4ubuntu2",
        "1:2.4+dfsg-4ubuntu3",
        "1:2.4+dfsg-5ubuntu3",
        "1:2.5+dfsg-1ubuntu2",
        "1:2.5+dfsg-1ubuntu3",
        "1:2.5+dfsg-1ubuntu4",
        "1:2.5+dfsg-1ubuntu5",
        "1:2.5+dfsg-5ubuntu1",
        "1:2.5+dfsg-5ubuntu2",
        "1:2.5+dfsg-5ubuntu4",
        "1:2.5+dfsg-5ubuntu6",
        "1:2.5+dfsg-5ubuntu7",
        "1:2.5+dfsg-5ubuntu10",
        "1:2.5+dfsg-5ubuntu10.1",
        "1:2.5+dfsg-5ubuntu10.2",
        "1:2.5+dfsg-5ubuntu10.3",
        "1:2.5+dfsg-5ubuntu10.4",
        "1:2.5+dfsg-5ubuntu10.5",
        "1:2.5+dfsg-5ubuntu10.6",
        "1:2.5+dfsg-5ubuntu10.7",
        "1:2.5+dfsg-5ubuntu10.8",
        "1:2.5+dfsg-5ubuntu10.9",
        "1:2.5+dfsg-5ubuntu10.10"
      ]
    }
  ],
  "aliases": [],
  "details": "Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a \"double fetch\" vulnerability.",
  "id": "UBUNTU-CVE-2016-9381",
  "modified": "2026-04-22T07:38:04Z",
  "published": "2017-01-23T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-9381"
    },
    {
      "type": "REPORT",
      "url": "https://xenbits.xen.org/xsa/advisory-197.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3261-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2016-9381"
    }
  ],
  "related": [
    "USN-3261-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2016-9381"
  ]
}



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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.


Detection rules are retrieved from Rulezet.