Google V8 before 5.2.361.32, as used in Google Chrome before 52.0.2743.82, does not properly process left-trimmed objects, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via crafted JavaScript code.
objects.cc in Google V8 before 5.2.361.27, as used in Google Chrome before 52.0.2743.82, does not prevent API interceptors from modifying a store target without setting a property, which allows remote attackers to bypass the Same Origin Policy via a crafted web site.