Ubuntu Security Notice 934-1 – Marc Schoenefeld discovered a buffer overflow in Netpbm when loading certain images. If a user or automated system were tricked into opening a specially crafted XPM image, a remote attacker could crash Netpbm. 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/89081/USN-934-1.txt
Source: https://packetstormsecurity.com/files/89081/Ubuntu-Security-Notice-934-1.html