CVE-2023-45920 Null dereference in n/a

Medium 4.2 Published 27 Mar 2024 Updated 4 Nov 2025

A NULL pointer dereference in Xfig can cause a denial of service when interacting with anomalous X server behavior.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2023-45920?

CVE-2023-45920 is a medium-severity vulnerability in n/a, published on 27 Mar 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Xfig v3.2.8 was discovered to contain a NULL pointer dereference when calling XGetWMHints(). NOTE: this is disputed because it is not expected that an X application should continue to run when there is arbitrary anomalous behavior from the X server or window manager.

Weakness: CWE-476

Which versions are affected by CVE-2023-45920?

It affects 1 product.

Linux distribution packages (1)

xfig SUSE:Linux Enterprise Software Development Kit 12 SP5 All versions 3.2.8a-4.6.1

Products include Xfig Project Xfig.

How do I fix CVE-2023-45920?

Apply the vendor's patch.

Is CVE-2023-45920 being exploited?

There is no known exploitation of CVE-2023-45920 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2023-45920, GHSA-57m4-vwwv-mmqr, MGASA-2024-0125, SUSE-SU-2024:1196-1.