The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x
and Citrix XenServer 6.0.2 and earlier uses the return value of the
get_free_pirq function as an array index without checking that the
return value indicates an error, which allows guest OS users to cause
a denial of service (invalid memory write and host crash) and possibly
gain privileges via unspecified vectors.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
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the CVE-ID was allocated or reserved, and does not
necessarily indicate when this vulnerability was
discovered, shared with the affected vendor, publicly
disclosed, or updated in CVE.
This is an entry on the CVE
list, which standardizes names for security