UBUNTU-CVE-2014-7156

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Source
https://ubuntu.com/security/CVE-2014-7156
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2014/UBUNTU-CVE-2014-7156.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2014-7156
Upstream
Published
2014-10-02T14:55:00Z
Modified
2025-07-16T07:32:11.257505Z
Severity
  • Ubuntu - medium
Summary
[none]
Details

The x86emulate function in arch/x86/x86emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors.

References

Affected packages

Ubuntu:14.04:LTS / xen

Package

Name
xen
Purl
pkg:deb/ubuntu/xen@4.4.0-0ubuntu5.2?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4.0-0ubuntu5.2

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libxen-4.4",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "libxen-dev",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "libxen-ocaml",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "libxen-ocaml-dev",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "libxenstore3.0",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xen-hypervisor-4.1-amd64",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xen-hypervisor-4.3-amd64",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xen-hypervisor-4.3-armhf",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xen-hypervisor-4.4-amd64",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xen-hypervisor-4.4-arm64",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xen-hypervisor-4.4-armhf",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xen-system-amd64",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xen-system-arm64",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xen-system-armhf",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xen-utils-4.4",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xen-utils-common",
            "binary_version": "4.4.0-0ubuntu5.2"
        },
        {
            "binary_name": "xenstore-utils",
            "binary_version": "4.4.0-0ubuntu5.2"
        }
    ],
    "availability": "No subscription required"
}