NULL Pointer Dereference Affecting qemu-kvm-ui-opengl package, versions <17:7.2.0-14.el9_2.5


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.09% (40th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-CENTOS9-QEMUKVMUIOPENGL-5743245
  • published28 Jun 2023
  • disclosed28 Jun 2023

Introduced: 28 Jun 2023

CVE-2023-3354  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Centos:9 qemu-kvm-ui-opengl to version 17:7.2.0-14.el9_2.5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-kvm-ui-opengl package and not the qemu-kvm-ui-opengl package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.

CVSS Scores

version 3.1