kdelibs -- integer overflow in khtml

Red Hat reports:

An integer overflow flaw was found in the way Qt handled pixmap
images. The KDE khtml library uses Qt in such a way that untrusted
parameters could be passed to Qt, triggering the overflow.
An attacker could for example create a malicious web page that when
viewed by a victim in the Konqueror browser would cause Konqueror
to crash or possibly execute arbitrary code with the privileges of
the victim.