VULNERABILITY INTELLIGENCE
CVE-2009-3722
CVSS score7.1 HIGH
EPSS probability2.28%
CISA KEVNot currently listed
Published2009-10-30
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:N/I:N/A:C
Description
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.