A vulnerability has been discovered in Qt, which can be exploited by malicious people to potentially compromise an application using the library.
The vulnerability is caused due to the "QTextEngine::LayoutData::reallocate()" function in src/gui/text/qtextengine.cpp not properly checking the return value of a memory reallocation, which can be exploited to cause a memory corruption by e.g. visiting a specially crafted website in an application the QtWebKit component.
Note: Successful exploitation may require that Qt has been compiled with the QT_NO_EXCEPTIONS (-no-exceptions) setting.
Solution: Update to version 4.7.2 or later.
Provided and/or discovered by: Originally reported as a Denial of Service in Arora by D4rk357.
Additional information provided by Secunia Research.
Original Advisory: D4rk357:
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