A string of 13 characters (appear to be in Assyrian) is all needed to crash any tab in Chrome for OS X. Chrome crash vulnerability has already been reported by an open-source project Chromium project. The developer who discovered this bug gives two different scenarios in which this bug could be abused. The issue appears to be small but is really serious, as it is possible for anyone to tweet out the text in question, and crash all Chrome for Mac users whose Twitter timeline will load those characters.
Source: https://thehackernews.com/2015/03/chrome-crash-vulnerability.html