CVE-2012-1601: Linux Kernel

Medium severity, CVSS 4.9. EPSS: 0.4% chance of exploitation in the next 30 days.

The KVM implementation in the Linux kernel before 3.3.6 allows host OS users to cause a denial of service (NULL pointer dereference and host OS crash) by making a KVM_CREATE_IRQCHIP ioctl call after a virtual CPU already exists.

Affected products

• Linux Linux Kernel: up to and including 3.3.5

Published 2012-05-17. Last modified 2026-06-16.