CVE-2016-1922: Debian Linux

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.

Affected products

• Debian Debian Linux: version 7.0 only; version 8.0 only
• Qemu Qemu: up to and including 2.5.1.1

Published 2016-12-29. Last modified 2026-06-17.