NULL Pointer Dereference Affecting qemu-kvm-hw-usbredir package, versions <15:6.2.0-49.module+el8.10.0+1752+38c6b60a


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
1.26% (66th percentile)

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  • Snyk IDSNYK-ROCKY8-QEMUKVMHWUSBREDIR-7260950
  • published15 Jun 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 Rocky-Linux:8 qemu-kvm-hw-usbredir to version 15:6.2.0-49.module+el8.10.0+1752+38c6b60a or higher.
This issue was patched in RLSA-2024:2962.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-kvm-hw-usbredir package and not the qemu-kvm-hw-usbredir package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 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 Base Scores

version 3.1