CVE-2015-8340: Undefined Security Weakness

The memoryexchange function in common/memory.c in Xen 3.2.x through 4.6.x does not properly release locks, which might allow guest OS administrators to cause a denial of service deadlock or host crash via unspecified vectors, related to XENMEMexchange error handling...

CVE-2015-8339: Undefined Security Weakness

The memoryexchange function in common/memory.c in Xen 3.2.x through 4.6.x does not properly hand back pages to a domain, which might allow guest OS administrators to cause a denial of service host crash via unspecified vectors related to domain teardown...