Google Chrome 44 contains patches for 43 security vulnerabilities, many of them in the high-risk category. Two of the more serious vulnerabilities fixed in Chrome 44 are a pair of universal cross-site scripting bugs. Google paid out roughly $40,000 to external researchers who reported vulnerabilities to the company. Among the other vulnerabilities patched in this release are three heap buffer overflows in PDFium, the PDF rendering engine in Chrome. There also are a number of use-after-free bugs in various components patched in the release.
Source: https://threatpost.com/google-patches-43-bugs-in-chrome/113892/