Improper Handling of Invalid IOAPIC_REG_SELECT and IOAPIC_REG_WINDOW Operations in Linux Kernel

CVE-2013-1798 · MEDIUM Severity

AV:A/AC:H/AU:N/C:C/I:N/A:C

The ioapic_read_indirect function in virt/kvm/ioapic.c in the Linux kernel through 3.8.4 does not properly handle a certain combination of invalid IOAPIC_REG_SELECT and IOAPIC_REG_WINDOW operations, which allows guest OS users to obtain sensitive information from host OS memory or cause a denial of service (host OS OOPS) via a crafted application.

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