Gentoo Linux Security Advisory 201603-10 - Multiple vulnerabilities have been found in QtGui allowing remote attackers to execute arbitrary code or cause Denial of Service. Versions less than 5.4.1-r1 are affected.
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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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Slackware Security Advisory - New qt packages are available for Slackware 14.1, and -current to fix security issues.
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