qt4-x11, qtbase-opensource-src vulnerabilities

Wolfgang Schenk discovered that Qt incorrectly handled certain malformed
GIF images. If a user or automated system were tricked into opening a
specially crafted GIF image, a remote attacker could use this issue to
cause Qt to crash, resulting in a denial of service. This issue only
applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-0190)

Fabian Vogt discovered that Qt incorrectly handled certain malformed BMP
images. If a user or automated system were tricked into opening a specially
crafted BMP image, a remote attacker could use this issue to cause Qt to
crash, resulting in a denial of service. (CVE-2015-0295)

Richard Moore and Fabian Vogt discovered that Qt incorrectly handled
certain malformed BMP images. If a user or automated system were tricked
into opening a specially crafted BMP image, a remote attacker could use
this issue to cause Qt to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2015-1858)

Richard Moore and Fabian Vogt discovered that Qt incorrectly handled
certain malformed ICO images. If a user or automated system were tricked
into opening a specially crafted ICO image, a remote attacker could use
this issue to cause Qt to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2015-1859)

Richard Moore and Fabian Vogt discovered that Qt incorrectly handled
certain malformed GIF images. If a user or automated system were tricked
into opening a specially crafted GIF image, a remote attacker could use
this issue to cause Qt to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2015-1860)