Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2023-0494

Published: 7 February 2023

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.

Notes

AuthorNote
mdeslaur
xorg server is actually the xorg-server package
the xorg package only contains docs
xwayland package contains parts of xorg-server

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
xorg-server
Launchpad, Ubuntu, Debian
bionic
Released (2:1.19.6-1ubuntu4.14)
focal
Released (2:1.20.13-1ubuntu1~20.04.6)
jammy
Released (2:21.1.3-2ubuntu2.7)
kinetic
Released (2:21.1.4-2ubuntu1.5)
trusty
Released (2:1.15.1-0ubuntu2.11+esm7)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial
Released (2:1.18.4-0ubuntu0.12+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
lunar
Released (2:21.1.7-1ubuntu1)
Patches:
upstream: https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cdac55392ecf71ec
xorg-server-hwe-16.04
Launchpad, Ubuntu, Debian
xenial
Released (2:1.19.6-1ubuntu4.1~16.04.6+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
bionic Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xorg-server-hwe-18.04
Launchpad, Ubuntu, Debian
bionic
Released (2:1.20.8-2ubuntu2.2~18.04.10)
kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

focal Does not exist

jammy Does not exist

xorg-server-lts-utopic
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Does not exist

xorg-server-lts-vivid
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Does not exist

xorg-server-lts-wily
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Does not exist

xorg-server-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Ignored
(end of standard support)
upstream Needs triage

xenial Does not exist

xwayland
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy
Released (2:22.1.1-1ubuntu0.5)
kinetic
Released (2:22.1.3-2ubuntu0.3)
trusty Does not exist

upstream Needs triage

xenial Does not exist

lunar
Released (2:22.1.8-1)

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H