VULNERABILITY INTELLIGENCE

CVE-2011-4622

CVSS score4.9 MEDIUM
EPSS probability0.35%
CISA KEVNot currently listed
Published2012-01-27
Last modified2026-06-16
CVSS vectorAV:L/AC:L/Au:N/C:N/I:N/A:C

Description

The create_pit_timer function in arch/x86/kvm/i8254.c in KVM 83, and possibly other versions, does not properly handle when Programmable Interval Timer (PIT) interrupt requests (IRQs) when a virtual interrupt controller (irqchip) is not available, which allows local users to cause a denial of service (NULL pointer dereference) by starting a timer.

Primary references