CVE-2009-3616: Qemu

Critical severity, CVSS 9.9. EPSS: 3.9% chance of exploitation in the next 30 days.

Multiple use-after-free vulnerabilities in vnc.c in the VNC server in QEMU 0.10.6 and earlier might allow guest OS users to execute arbitrary code on the host OS by establishing a connection from a VNC client and then (1) disconnecting during data transfer, (2) sending a message using incorrect integer data types, or (3) using the Fuzzy Screen Mode protocol, related to double free vulnerabilities.

Affected products

• Qemu Qemu: up to and including 0.10.6
• Red Hat Enterprise Linux Server: version 5.0 only
• Red Hat Enterprise Linux Workstation: version 5.0 only

Published 2009-10-23. Last modified 2026-06-16.