Multiple serious vulnerabilities have been found in Google Chrome 34.0.1847.137 and earlier. Malicious can use these vulnerabilities to cause denial of service, spoof UI or possibly other impact.

Below is a complete list of vulnerabilities

1. use-after-free in StyleElement::removedFromDocument function at core/dom/StyleElement.cpp
2. integer overflow in AudioInputRendererHost::OnCreateStream function at content/browser/renderer_host/media/audio_input_renderer_host.cc
3. use-after-free vulnerability in the SVG implementation at Blink
4. reliance on an insufficiently large integer in  InMemoryUrlProtocol::Read function at media/filters/in_memory_url_protocol.cc
5. integer underflow in the LCodeGen::PrepareKeyedOperand function at arm/lithium-codegen-arm.cc
6. Vectors related to ScrollView::paint function can be exploited to spoof UI via extending scrollbar painting.

Google Chrome 34.0.1847.137 and earlier

Update to the latest version. File with name old_chrome can be still detected after update. It caused by Google Chrome update policy which does not remove old versions when installing updates. Try to contact vendor for further delete instructions or ignore such kind of alerts at your own risk.
Google Chrome

Google chrome blog

CVE-2014-3152
CVE-2014-1749
CVE-2014-1748
CVE-2014-1747
CVE-2014-1746
CVE-2014-1745
CVE-2014-1744
CVE-2014-1743