Ubuntu Security Notice 419-1 – A flaw was discovered in Samba’s file opening code, which in certain situations could lead to an endless loop, resulting in a denial of service. A format string overflow was discovered in Samba’s ACL handling on AFS shares. Remote users with access to an AFS share could create crafted filenames and execute arbitrary code with root privileges.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/54251/USN-419-1.txt
Source: https://packetstormsecurity.com/files/54251/Ubuntu-Security-Notice-419-1.html