The Regular Expressions package in International Components for Unicode (ICU) for C/C++ before 2014-12-03 as used in Google Chrome before 40.0.2214.91 calculates certain values without ensuring that they can be represented in a 24-bit field which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted string a related issue to CVE-2014-7923.