UBUNTU-CVE-2016-9382

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Source
https://ubuntu.com/security/CVE-2016-9382
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-9382.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2016-9382
Upstream
Published
2017-01-23T21:59:00Z
Modified
2025-09-08T16:43:56Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Xen 4.0.x through 4.7.x mishandle x86 task switches to VM86 mode, which allows local 32-bit x86 HVM guest OS users to gain privileges or cause a denial of service (guest OS crash) by leveraging a guest operating system that uses hardware task switching and allows a new task to start in VM86 mode.

References

Affected packages

Ubuntu:14.04:LTS / xen

Package

Name
xen
Purl
pkg:deb/ubuntu/xen@4.4.2-0ubuntu0.14.04.9?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4.2-0ubuntu0.14.04.9

Affected versions

4.*

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_version": "4.4.2-0ubuntu0.14.04.9",
            "binary_name": "libxen-4.4"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.9",
            "binary_name": "libxen-dev"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.9",
            "binary_name": "libxen-ocaml"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.9",
            "binary_name": "libxen-ocaml-dev"
        },
        {
            "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"
        }
    ]
}

Ubuntu:16.04:LTS / xen

Package

Name
xen
Purl
pkg:deb/ubuntu/xen@4.6.0-1ubuntu4.3?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.6.0-1ubuntu4.3

Affected versions

4.*

4.5.1-0ubuntu1
4.5.1-0ubuntu2
4.6.0-1ubuntu1
4.6.0-1ubuntu2
4.6.0-1ubuntu4
4.6.0-1ubuntu4.1
4.6.0-1ubuntu4.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "libxen-4.6"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "libxen-dev"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "libxenstore3.0"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-hypervisor-4.4-amd64"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-hypervisor-4.4-arm64"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-hypervisor-4.4-armhf"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-hypervisor-4.5-amd64"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-hypervisor-4.5-arm64"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-hypervisor-4.5-armhf"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-hypervisor-4.6-amd64"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-hypervisor-4.6-arm64"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-hypervisor-4.6-armhf"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-system-amd64"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-system-arm64"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-system-armhf"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-utils-4.6"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xen-utils-common"
        },
        {
            "binary_version": "4.6.0-1ubuntu4.3",
            "binary_name": "xenstore-utils"
        }
    ]
}