Google Chrome before 40.0.2214.91, when the Harmony proxy in Google V8 is enabled, allows remote attackers to bypass the Same Origin Policy via crafted JavaScript code with Proxy.create and console.log calls, related to HTTP responses that lack an "X-Content-Type-Options: nosniff" header.

The SelectionOwner::ProcessTarget function in ui/base/x/selectionowner.cc in the UI implementation in Google Chrome before 40.0.2214.91 uses an incorrect data type for a certain length value, which allows remote attackers to cause a denial of service (out-of-bounds read) via crafted X11 data.

Skia, as used in Google Chrome before 40.0.2214.91, allows remote attackers to cause a denial of service (out-of-bounds read) via unspecified vectors.