Google Chrome contains a use-after-free error in ResourceResponse.cpp that is triggered when a race condition occurs with workers and xmlhttprequests. With a specially crafted web page, a context-dependent attacker can dereference already freed memory and potentially execute arbitrary code.
Loss of Integrity
Upgrade to version 21.0.1180.89 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.