The HYPERVISOR_xen_version hypercall in Xen 3.2.x through 4.5.x does not properly initialize data structures, which allows local guest users to obtain sensitive information via unspecified vectors.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2045
Reference (s):
- BID:72955
- URL: http://www.securityfocus.com/bid/72955
- http://support.citrix.com/article/CTX200484
- http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-423503.htm
- http://xenbits.xen.org/xsa/advisory-122.html