CVE-2009-3722

The handle_dr function in arch/x86/kvm/vmx.c in the KVM subsystem in the
Linux kernel before 2.6.31.1 does not properly verify the Current Privilege
Level (CPL) before accessing a debug register, which allows guest OS users
to cause a denial of service (trap) on the host OS via a crafted
application.

Bugs

• <https://bugzilla.redhat.com/show_bug.cgi?id=531660&gt;