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The Xen Vulnerability That Rebooted the Public Cloud

By Sean Michael Kerner

A proverbial lynchpin holds the world’s major public cloud providers together, and that pin is the open-source Xen hypervisor. Amazon, Rackspace and IBM SoftLayer have all had to reboot their servers in the last several days to fix a flaw in Xen that was privately reported two weeks ago and only publicly disclosed on Oct. 1.

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