UBUNTU-CVE-2016-6259

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Source
https://ubuntu.com/security/CVE-2016-6259
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-6259.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2016-6259
Upstream
Published
2016-08-02T16:59:00Z
Modified
2025-09-08T16:43:49Z
Severity
  • 6.2 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention (SMAP) whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service (hypervisor and VM crash) by triggering a safety check.

References

Affected packages

Ubuntu:16.04:LTS / xen

Package

Name
xen
Purl
pkg:deb/ubuntu/xen@4.6.0-1ubuntu4.2?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.6.0-1ubuntu4.2

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libxen-4.6",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "libxen-dev",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "libxenstore3.0",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-hypervisor-4.4-amd64",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-hypervisor-4.4-arm64",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-hypervisor-4.4-armhf",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-hypervisor-4.5-amd64",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-hypervisor-4.5-arm64",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-hypervisor-4.5-armhf",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-hypervisor-4.6-amd64",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-hypervisor-4.6-arm64",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-hypervisor-4.6-armhf",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-system-amd64",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-system-arm64",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-system-armhf",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-utils-4.6",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xen-utils-common",
            "binary_version": "4.6.0-1ubuntu4.2"
        },
        {
            "binary_name": "xenstore-utils",
            "binary_version": "4.6.0-1ubuntu4.2"
        }
    ]
}