Ubuntu Security Notice 994-1 – It was discovered that libHX incorrectly handled certain parameters to the HX_split function. An attacker could use this flaw to cause a denial of service or possibly execute arbitrary code with the privileges of the user. The default compiler options for affected releases should reduce the vulnerability to a denial of service.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/94346/USN-994-1.txt
Source: https://packetstormsecurity.com/files/94346/Ubuntu-Security-Notice-994-1.html