An issue was discovered in certain Apple products. iOS before 10.3 is affected. Safari before 10.1 is affected. The issue involves mishandling of OpenGL shaders in the "WebKit" component. It allows remote attackers to obtain sensitive information from process memory via a crafted web site.
https://support.apple.com/HT207617
https://support.apple.com/HT207600
https://security.gentoo.org/glsa/201709-03