The emulation of instructions which generate software interrupts fails to perform supervisor mode permission checks. Malicious HVM guest user mode code may be able to crash the guest. Acknowledgements: Red Hat would like to thank the Xen for reporting this issue.
Statement: Not vulnerable. This issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.
Created xen tracking bugs for this issue: Affects: fedora-all [bug 1145738]