UBUNTU-CVE-2016-4480

See a problem?
Please try reporting it to the source first.

Source

https://ubuntu.com/security/CVE-2016-4480

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-4480.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2016-4480

Related

CVE-2016-4480

Published

2016-05-18T14:59:00Z

Modified

2016-05-18T14:59:00Z

Severity

8.4 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

The guestwalktables function in arch/x86/mm/guest_walk.c in Xen 4.6.x and earlier does not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might allow local guest OS users to gain privileges via a crafted mapping of memory.

References

Affected packages

Ubuntu:14.04:LTS / xen

Package

Name: xen
Purl: pkg:deb/ubuntu/xen?arch=src?distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.4.2-0ubuntu0.14.04.6

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

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "libxen-4.4"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "libxen-4.4-dbgsym"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "libxen-dev"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "libxen-ocaml"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "libxen-ocaml-dbgsym"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "libxen-ocaml-dev"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "libxenstore3.0"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "libxenstore3.0-dbgsym"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-hypervisor-4.1-amd64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-hypervisor-4.3-amd64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-hypervisor-4.3-armhf"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-hypervisor-4.4-amd64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-hypervisor-4.4-arm64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-hypervisor-4.4-armhf"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-system-amd64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-system-arm64"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-system-armhf"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-utils-4.4"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-utils-4.4-dbgsym"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xen-utils-common"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xenstore-utils"
        },
        {
            "binary_version": "4.4.2-0ubuntu0.14.04.6",
            "binary_name": "xenstore-utils-dbgsym"
        }
    ]
}

Ubuntu:16.04:LTS / xen

Package

Name: xen
Purl: pkg:deb/ubuntu/xen?arch=src?distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.6.0-1ubuntu4.1

Affected versions

4.*

4.5.1-0ubuntu1

4.5.1-0ubuntu2

4.6.0-1ubuntu1

4.6.0-1ubuntu2

4.6.0-1ubuntu4

Ecosystem specific

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