Unmediated PCI register access in qemu

ISSUE DESCRIPTION Qemu allows guests to not only read, but also write all parts of the PCI config space but not extended config space of passed through PCI devices not explicitly dealt with for partial emulation purposes. IMPACT Since the effect depends on the specific purpose of the the config...

Non-maskable interrupts triggerable by guests

ISSUE DESCRIPTION Guests are currently permitted to modify all of the writable bits in the PCI command register of devices passed through to them. This in particular allows them to disable memory and I/O decoding on the device unless the device is an SR-IOV virtual function, in which case...

CVE-2009-1914

The pciregisteriommuregion function in arch/sparc/kernel/pcicommon.c in the Linux kernel before 2.6.29 on the sparc64 platform allows local users to cause a denial of service system crash by reading the /proc/iomem file, related to uninitialized pointers and the requestresource function...