Ubuntu Security Notice 2626-1 - 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. 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. Various other issues were also addressed.
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Gentoo Linux Security Advisory 201412-25 - A NULL pointer dereference in QtGui could lead to Denial of Service. Versions less than 4.8.5-r2 are affected.
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