This update for gd fixes the following security issues:
CVE-2016-7568: A specially crafted image file could cause an application crash or potentially execute arbitrary code
when the image is converted to webp (bsc#1001900)
CVE-2016-8670: Stack Buffer Overflow in GD dynamicGetbuf (bsc#1004924)
CVE-2016-6911: Check for out-of-bound read in dynamicGetbuf() (bsc#1005274)