Red Hat Xen MMIO Instruction Decoder Local Guest Denial Of Service Vulnerability

Red Hat Xen is prone to a denial-of-service vulnerability because of an error in the memory-mapped I/O (MMIO) decoder implementation.

An attacker in the guest operating system can exploit this issue to cause the guest to crash, by using the hypervisor to emulate the affected MMIO instruction. Successful attacks will result in a denial-of-service condition in the guest.

This issue affects 32 bit guests on the Xen implementation for Red Hat Enterprise Linux 5.


 

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