Resolved Bugs
1210675 – CVE-2015-1860 qt: segmentation fault in qgifhandler.cpp
1210673 – CVE-2015-1858 qt: segmentation fault in qbmphandler.cpp
1210674 – CVE-2015-1859 qt: segmentation fault in qicohandler.cpp<br
Multiple vulnerabilities were found in Qt image format handling of BMP, ICO and GIF files. The issues exposed included denial of service and buffer overflows leading to heap corruption. It is possible the latter could be used to perform remote code execution.
See also http://lists.qt-project.org/pipermail/announce/2015-April/000067.html