CVEvulnerability

CVE-2011-4622

4.9 MEDIUM Published 2012-01-27 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2012-01-27
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
4.9 MEDIUM — AV: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.

Affected configurations

• redhat kvm 83

References