NULL Pointer Dereference Affecting qemu package, versions <1:8.2.0+ds-5


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (24th percentile)

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  • Snyk IDSNYK-DEBIAN13-QEMU-6155395
  • published13 Jan 2024
  • disclosed12 Jan 2024

Introduced: 12 Jan 2024

CVE-2023-6683  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Debian:13 qemu to version 1:8.2.0+ds-5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service.

CVSS Scores

version 3.1