Ubuntu Security Notice 4316-1 - It was discovered that GD Graphics Library incorrectly handled cloning an image. An attacker could possibly use this issue to cause GD Graphics Library to crash, resulting in a denial of service. It was discovered that GD Graphics Library incorrectly handled loading images from X bitmap format files. An attacker could possibly use this issue to cause GD Graphics Library to crash, resulting in a denial of service, or to disclose contents of the stack that has been left there by previous code. This issue only affected Ubuntu 18.04 LTS and Ubuntu 16.04 LTS. Various other issues were also addressed.
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