Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Thu, 29 Mar 2012 21:58:36 +0200
From: Petr Matousek <pmatouse@...hat.com>
To: oss-security@...ts.openwall.com
Subject: CVE request -- kernel: kvm: irqchip_in_kernel() and vcpu->arch.apic
 inconsistency

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:
http://git.kernel.org/?p=virt/kvm/kvm.git;a=commit;h=5b40572ed5f0344b9dbee486a17c589ce1abe1a3

References:
http://comments.gmane.org/gmane.comp.emulators.kvm.devel/86217
https://bugzilla.redhat.com/show_bug.cgi?id=808199

Thanks,
-- 
Petr Matousek / Red Hat Security Response Team

Powered by blists - more mailing lists

Your e-mail address:

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.