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Date: Thu, 29 Mar 2012 21:58:36 +0200
From: Petr Matousek <>
Subject: CVE request -- kernel: kvm: irqchip_in_kernel() and vcpu->arch.apic

If some vcpus are created before KVM_CREATE_IRQCHIP, then
irqchip_in_kernel() and vcpu->arch.apic will be inconsistent, leading to
potential NULL pointer dereferences.

A unprivileged local user could use this flaw to crash the system.

Upstream fix:;a=commit;h=5b40572ed5f0344b9dbee486a17c589ce1abe1a3


Petr Matousek / Red Hat Security Response Team

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