NULL Pointer Dereference Affecting qemu-hw-display-virtio-gpu-pci package, versions <5.2.0-150300.127.3


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server 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-SLES153-QEMUHWDISPLAYVIRTIOGPUPCI-5876352
  • published30 Aug 2023
  • disclosed28 Aug 2023

Introduced: 28 Aug 2023

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

How to fix?

Upgrade SLES:15.3 qemu-hw-display-virtio-gpu-pci to version 5.2.0-150300.127.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-hw-display-virtio-gpu-pci package and not the qemu-hw-display-virtio-gpu-pci package as distributed by SLES. See How to fix? for SLES:15.3 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