CVEvulnerability

CVE-2023-3354

7.5 HIGH Published 2023-07-11 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-07-11
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

Description

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.

Affected configurations

• qemu qemu (< 8.1.0) • qemu qemu 8.1.0 • redhat openstack platform 13.0 • redhat enterprise linux 7.0 • redhat enterprise linux 8.0 • redhat enterprise linux 9.0 • fedoraproject fedora 38

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References