CVE-2025-11234

Name of the Vulnerable Software and Affected Versions QEMU (affected versions not specified)

Description A flaw exists in QEMU where freeing the QIOChannelWebsock object during a handshake process results in a GSource leak. This leak can cause a use-after-free condition when the callback attempts to use the channel. A malicious client with network access to the VNC WebSocket port can exploit this to cause a denial of service during the WebSocket handshake, before VNC client authentication.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.