Multiple buffer overflows in plugins/imageformats/ico/qicohandler.cpp in the QtBase module in Qt before 4.8.7 and 5.x before 5.4.2 allow remote attackers to cause a denial of service (segmentation fault and crash) and possibly execute arbitrary code via a crafted ICO image.
lists.fedoraproject.org/pipermail/package-announce/2015-April/155424.html
lists.fedoraproject.org/pipermail/package-announce/2015-April/155927.html
lists.fedoraproject.org/pipermail/package-announce/2015-April/155962.html
lists.fedoraproject.org/pipermail/package-announce/2015-April/155976.html
lists.fedoraproject.org/pipermail/package-announce/2015-April/156727.html
lists.qt-project.org/pipermail/announce/2015-April/000067.html
www.securityfocus.com/bid/74307
www.securityfocus.com/bid/74310
www.ubuntu.com/usn/USN-2626-1
security.gentoo.org/glsa/201603-10