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XENMEM_exchange handler in Xen 4.2 and earlier does not properly check the memory address, which allows local PV guest OS administrators to cause a denial of service (crash) or possibly gain privileges via unspecified vectors that overwrite memory in the hypervisor reserved range.","Type":"Description","Title":"CVE-2012-5513"},{"CveYear":"2012","CveId":"5513","Ordinal":"2","NoteData":"2012-12-13","Type":"Other","Title":"Published"},{"CveYear":"2012","CveId":"5513","Ordinal":"3","NoteData":"2017-08-28","Type":"Other","Title":"Modified"}]}}}