The get_page_from_gfn hypercall function in Xen 4.2 allows local PV guest OS administrators to cause a denial of service (crash) via a crafted GFN that triggers a buffer over-read.
http://secunia.com/advisories/51397
http://secunia.com/advisories/55082
http://security.gentoo.org/glsa/glsa-201309-24.xml
http://www.openwall.com/lists/oss-security/2012/12/03/6
Source: MITRE
Published: 2012-12-13
Updated: 2017-08-29
Type: NVD-CWE-noinfo
Base Score: 4.7
Vector: AV:L/AC:M/Au:N/C:N/I:N/A:C
Impact Score: 6.9
Exploitability Score: 3.4
Severity: MEDIUM