Secunia Security Advisory – Steve Kemp has reported a security issue in Xen, which can be exploited by malicious, local users to truncate arbitrary files.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/60395/sa27389.txt
Source: https://packetstormsecurity.com/files/60395/Secunia-Security-Advisory-27389.html