UBUNTU-CVE-2023-0494

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Source
https://ubuntu.com/security/CVE-2023-0494
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-0494.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-0494
Upstream
Downstream
Related
Published
2023-02-07T01:00:00Z
Modified
2025-09-08T16:55:32Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.

References

Affected packages

Ubuntu:Pro:14.04:LTS / xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server@2:1.15.1-0ubuntu2.11+esm7?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.15.1-0ubuntu2.11+esm7

Affected versions

2:1.*

2:1.14.3-3ubuntu2
2:1.14.3-3ubuntu3
2:1.14.3-3ubuntu4
2:1.14.3-5ubuntu1
2:1.14.4-1ubuntu1
2:1.14.4-1ubuntu2
2:1.14.4.901-0ubuntu2
2:1.14.5-1ubuntu2
2:1.14.5-1ubuntu4
2:1.15.0-1ubuntu1
2:1.15.0-1ubuntu2
2:1.15.0-1ubuntu3
2:1.15.0-1ubuntu4
2:1.15.0-1ubuntu6
2:1.15.0-1ubuntu7
2:1.15.1-0ubuntu1
2:1.15.1-0ubuntu2
2:1.15.1-0ubuntu2.1
2:1.15.1-0ubuntu2.4
2:1.15.1-0ubuntu2.5
2:1.15.1-0ubuntu2.6
2:1.15.1-0ubuntu2.7
2:1.15.1-0ubuntu2.9
2:1.15.1-0ubuntu2.10
2:1.15.1-0ubuntu2.11
2:1.15.1-0ubuntu2.11+esm2
2:1.15.1-0ubuntu2.11+esm3
2:1.15.1-0ubuntu2.11+esm4
2:1.15.1-0ubuntu2.11+esm5
2:1.15.1-0ubuntu2.11+esm6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xdmx",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm7"
        },
        {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm7"
        },
        {
            "binary_name": "xnest",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm7"
        },
        {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm7"
        },
        {
            "binary_name": "xserver-common",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm7"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm7"
        },
        {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm7"
        },
        {
            "binary_name": "xserver-xorg-dev",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm7"
        },
        {
            "binary_name": "xserver-xorg-xmir",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm7"
        },
        {
            "binary_name": "xvfb",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm7"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:Pro:16.04:LTS / xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server@2:1.18.4-0ubuntu0.12+esm5?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.18.4-0ubuntu0.12+esm5

Affected versions

2:1.*

2:1.17.2-1ubuntu9
2:1.17.2-1ubuntu10
2:1.17.3-2ubuntu1
2:1.17.3-2ubuntu2
2:1.17.3-2ubuntu3
2:1.17.3-2ubuntu4
2:1.18.1-1ubuntu3
2:1.18.1-1ubuntu4
2:1.18.3-1ubuntu1
2:1.18.3-1ubuntu2
2:1.18.3-1ubuntu2.2
2:1.18.3-1ubuntu2.3
2:1.18.4-0ubuntu0.1
2:1.18.4-0ubuntu0.2
2:1.18.4-0ubuntu0.3
2:1.18.4-0ubuntu0.4
2:1.18.4-0ubuntu0.6
2:1.18.4-0ubuntu0.7
2:1.18.4-0ubuntu0.8
2:1.18.4-0ubuntu0.9
2:1.18.4-0ubuntu0.10
2:1.18.4-0ubuntu0.11
2:1.18.4-0ubuntu0.12
2:1.18.4-0ubuntu0.12+esm1
2:1.18.4-0ubuntu0.12+esm2
2:1.18.4-0ubuntu0.12+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xdmx",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xmir",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xnest",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xserver-common",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xserver-xorg-dev",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xserver-xorg-xmir",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xvfb",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        },
        {
            "binary_name": "xwayland",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm5"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:Pro:16.04:LTS / xorg-server-hwe-16.04

Package

Name
xorg-server-hwe-16.04
Purl
pkg:deb/ubuntu/xorg-server-hwe-16.04@2:1.19.6-1ubuntu4.1~16.04.6+esm4?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.19.6-1ubuntu4.1~16.04.6+esm4

Affected versions

2:1.*

2:1.18.4-1ubuntu6.1~16.04.1
2:1.18.4-1ubuntu6.1~16.04.2
2:1.19.3-1ubuntu1~16.04.2
2:1.19.3-1ubuntu1~16.04.3
2:1.19.3-1ubuntu1~16.04.4
2:1.19.5-0ubuntu2~16.04.1
2:1.19.6-1ubuntu4~16.04.1
2:1.19.6-1ubuntu4.1~16.04.1
2:1.19.6-1ubuntu4.1~16.04.2
2:1.19.6-1ubuntu4.1~16.04.3
2:1.19.6-1ubuntu4.1~16.04.4
2:1.19.6-1ubuntu4.1~16.04.5
2:1.19.6-1ubuntu4.1~16.04.6
2:1.19.6-1ubuntu4.1~16.04.6+esm1
2:1.19.6-1ubuntu4.1~16.04.6+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xmir-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm4"
        },
        {
            "binary_name": "xorg-server-source-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm4"
        },
        {
            "binary_name": "xserver-xephyr-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm4"
        },
        {
            "binary_name": "xserver-xorg-core-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm4"
        },
        {
            "binary_name": "xserver-xorg-dev-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm4"
        },
        {
            "binary_name": "xserver-xorg-legacy-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm4"
        },
        {
            "binary_name": "xwayland-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm4"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:18.04:LTS / xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server@2:1.19.6-1ubuntu4.14?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.19.6-1ubuntu4.14

Affected versions

2:1.*

2:1.19.5-0ubuntu2
2:1.19.6-1ubuntu1
2:1.19.6-1ubuntu2
2:1.19.6-1ubuntu3
2:1.19.6-1ubuntu4
2:1.19.6-1ubuntu4.1
2:1.19.6-1ubuntu4.2
2:1.19.6-1ubuntu4.3
2:1.19.6-1ubuntu4.4
2:1.19.6-1ubuntu4.5
2:1.19.6-1ubuntu4.6
2:1.19.6-1ubuntu4.7
2:1.19.6-1ubuntu4.8
2:1.19.6-1ubuntu4.9
2:1.19.6-1ubuntu4.10
2:1.19.6-1ubuntu4.11
2:1.19.6-1ubuntu4.12
2:1.19.6-1ubuntu4.13

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xdmx",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xmir",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xnest",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xserver-common",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xserver-xorg-dev",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xserver-xorg-xmir",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xvfb",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        },
        {
            "binary_name": "xwayland",
            "binary_version": "2:1.19.6-1ubuntu4.14"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / xorg-server-hwe-18.04

Package

Name
xorg-server-hwe-18.04
Purl
pkg:deb/ubuntu/xorg-server-hwe-18.04@2:1.20.8-2ubuntu2.2~18.04.10?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.20.8-2ubuntu2.2~18.04.10

Affected versions

2:1.*

2:1.20.1-3ubuntu2.1~18.04.1
2:1.20.4-1ubuntu3~18.04.1
2:1.20.5+git20191008-0ubuntu1~18.04.1
2:1.20.8-2ubuntu2.1~18.04.1
2:1.20.8-2ubuntu2.2~18.04.1
2:1.20.8-2ubuntu2.2~18.04.2
2:1.20.8-2ubuntu2.2~18.04.3
2:1.20.8-2ubuntu2.2~18.04.4
2:1.20.8-2ubuntu2.2~18.04.5
2:1.20.8-2ubuntu2.2~18.04.6
2:1.20.8-2ubuntu2.2~18.04.7
2:1.20.8-2ubuntu2.2~18.04.8
2:1.20.8-2ubuntu2.2~18.04.9

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xorg-server-source-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.10"
        },
        {
            "binary_name": "xserver-xephyr-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.10"
        },
        {
            "binary_name": "xserver-xorg-core-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.10"
        },
        {
            "binary_name": "xserver-xorg-dev-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.10"
        },
        {
            "binary_name": "xserver-xorg-legacy-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.10"
        },
        {
            "binary_name": "xwayland-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.10"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server@2:1.20.13-1ubuntu1~20.04.6?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.20.13-1ubuntu1~20.04.6

Affected versions

2:1.*

2:1.20.5+git20191008-0ubuntu1
2:1.20.6-1ubuntu1
2:1.20.7-2ubuntu1
2:1.20.7-2ubuntu2
2:1.20.8-2ubuntu2
2:1.20.8-2ubuntu2.1
2:1.20.8-2ubuntu2.2
2:1.20.8-2ubuntu2.3
2:1.20.8-2ubuntu2.4
2:1.20.8-2ubuntu2.6
2:1.20.9-2ubuntu1.1~20.04.1
2:1.20.9-2ubuntu1.2~20.04.1
2:1.20.9-2ubuntu1.2~20.04.2
2:1.20.11-1ubuntu1~20.04.2
2:1.20.13-1ubuntu1~20.04.2
2:1.20.13-1ubuntu1~20.04.3
2:1.20.13-1ubuntu1~20.04.4
2:1.20.13-1ubuntu1~20.04.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xdmx",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.6"
        },
        {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.6"
        },
        {
            "binary_name": "xnest",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.6"
        },
        {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.6"
        },
        {
            "binary_name": "xserver-common",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.6"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.6"
        },
        {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.6"
        },
        {
            "binary_name": "xserver-xorg-dev",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.6"
        },
        {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.6"
        },
        {
            "binary_name": "xvfb",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.6"
        },
        {
            "binary_name": "xwayland",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.6"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:22.04:LTS / xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server@2:21.1.3-2ubuntu2.7?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:21.1.3-2ubuntu2.7

Affected versions

2:1.*

2:1.20.13-1ubuntu1
2:1.20.13-1ubuntu2
2:1.20.14-1ubuntu1

2:21.*

2:21.1.3-2ubuntu2
2:21.1.3-2ubuntu2.1
2:21.1.3-2ubuntu2.2
2:21.1.3-2ubuntu2.3
2:21.1.3-2ubuntu2.4
2:21.1.3-2ubuntu2.5
2:21.1.3-2ubuntu2.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xnest",
            "binary_version": "2:21.1.3-2ubuntu2.7"
        },
        {
            "binary_name": "xorg-server-source",
            "binary_version": "2:21.1.3-2ubuntu2.7"
        },
        {
            "binary_name": "xserver-common",
            "binary_version": "2:21.1.3-2ubuntu2.7"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:21.1.3-2ubuntu2.7"
        },
        {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:21.1.3-2ubuntu2.7"
        },
        {
            "binary_name": "xserver-xorg-dev",
            "binary_version": "2:21.1.3-2ubuntu2.7"
        },
        {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:21.1.3-2ubuntu2.7"
        },
        {
            "binary_name": "xvfb",
            "binary_version": "2:21.1.3-2ubuntu2.7"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:22.04:LTS / xwayland

Package

Name
xwayland
Purl
pkg:deb/ubuntu/xwayland@2:22.1.1-1ubuntu0.5?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:22.1.1-1ubuntu0.5

Affected versions

2:21.*

2:21.1.2-0ubuntu1
2:21.1.3-1
2:21.1.3-1ubuntu1
2:21.1.4-1

2:22.*

2:22.1.0-1
2:22.1.1-1
2:22.1.1-1ubuntu0.1
2:22.1.1-1ubuntu0.2
2:22.1.1-1ubuntu0.3
2:22.1.1-1ubuntu0.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xwayland",
            "binary_version": "2:22.1.1-1ubuntu0.5"
        }
    ],
    "availability": "No subscription required"
}