Ubuntu Security Notice USN-794-1 – It was discovered that the Compress::Raw::Zlib Perl module incorrectly handled certain zlib compressed streams. If a user or automated system were tricked into processing a specially crafted compressed stream or file, a remote attacker could crash the application, leading to a denial of service.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/78875/USN-794-1.txt
Source: https://packetstormsecurity.com/files/78875/Ubuntu-Security-Notice-794-1.html