Use-after-free in X.org Server and Xwayland - CVE-2024-31083

Vulnerability identifier: #VU88118

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2024-31083

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

Affected software:
X.org Server
Xwayland
Oracle Solaris
Amazon Linux AMI
Gentoo Linux
Debian Linux
Oracle Linux
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Server 12
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
Red Hat Enterprise Linux Workstation
Anolis OS
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, little endian
SUSE Enterprise Storage
OpenBSD
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Ubuntu
Slackware Linux
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP3 LTSS
SUSE Linux Enterprise Desktop 15 SP4 LTSS
SUSE Linux Enterprise Server 15 SP4 LTSS
Basesystem Module
Development Tools Module
openSUSE Leap
openEuler
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
xserver-xorg-core (Ubuntu package)
xwayland (Ubuntu package)
tigervnc (Red Hat package)
tigervnc
tigervnc-server-minimal
tigervnc-server
tigervnc-server-applet
tigervnc-icons
tigervnc-server-module
tigervnc-license
tigervnc-selinux
xorg-x11-server
xorg-x11-server-sdk
xorg-x11-server-debuginfo
xorg-x11-server-debugsource
xorg-x11-server-extra-debuginfo
xorg-x11-server-extra
xorg-x11-server-wayland-debuginfo
xorg-x11-server-wayland
xorg-x11-server-source
xorg-x11-server-common
xorg-x11-server-Xdmx
xorg-x11-server-devel
xorg-x11-server-Xephyr
xorg-x11-server-Xnest
xorg-x11-server-Xorg
xorg-x11-server-Xvfb
xorg-x11-server-Xwayland
xorg-x11-server (Red Hat package)
xorg-x11-server-help
xorg-server (Debian package)
xorg-x11-server-doc
xorg-server-xephyr
xorg-server
xorg-server-xnest
xorg-server-xvfb
xorg-x11-server-Xwayland (Red Hat package)
xorg-server-xwayland
xwayland
xwayland-debugsource
xwayland-debuginfo
xwayland-devel
xorg-x11-server-Xvfb-debuginfo
x11-base/xorg-server
xorg-x11-server-Xwayland-devel
xorg-x11-server-Xwayland-debugsource
xorg-x11-server-Xwayland-debuginfo
xorg-x11-server-Xwayland-doc
x11-base/xwayland

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the ProcRenderAddGlyphs() function. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Install updates from vendor's website.

• https://lists.x.org/archives/xorg-announce/2024-April/003497.html
• https://gitlab.freedesktop.org/xorg/xserver/-/commit/bdca6c3d1f5057eeb3160
• https://www.zerodayinitiative.com/advisories/ZDI-24-407/