Ubuntu Security Notice USN-749-1 – It was discovered that libsndfile did not correctly handle description chunks in CAF audio files. If a user or automated system were tricked into opening a specially crafted CAF audio file, an attacker could execute arbitrary code with the privileges of the user invoking the program.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/76195/USN-749-1.txt
Source: https://packetstormsecurity.com/files/76195/Ubuntu-Security-Notice-749-1.html