An unspecified information leak flaw was found in the PDF viewer component of the Chromium browser. Upstream bug: https://code.google.com/p/chromium/issues/detail?id=520422 External References: http://googlechromereleases.blogspot.com/2015/11/stable-channel-update.html
Search using the id of the private upstream bug finds this upstream commit: https://chromium.googlesource.com/chromium/src/+/a42545fa19dcbdca14c7e53e214b05b3d9356af5
The above patch is included in the chromium-browser packages as shipped with Red Hat Enterprise Linux 6 Supplementary as of RHSA-2015:1841 updating packages to version 45.0.2454.101. https://rhn.redhat.com/errata/RHSA-2015-1841.html Upstream confirmed this issue was not fixed in 46.0.2490.86 for the first time, but was not properly documented in earlier announcements.