This indicates an attack attempt to exploit an Out Of Bounds Read Vulnerability in Google Chrome.
The vulnerability is due to an error in the vulnerable application when handling a maliciously crafted request. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted request.
Google Chrome prior to 57.0.2987.133 for Linux
Google Chrome prior to 57.0.2987.133 for Windows
Google Chrome prior to 57.0.2987.133 for Mac
Google Chrome prior to 57.0.2987.132 for Android
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.