The MITRE CVE dictionary describes this issue as:
Use-after-free vulnerability in khtml/rendering/render_replaced.cpp in Konqueror in KDE 4.7.3, when the context menu is shown, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code by accessing an iframe when it is being updated.
Not vulnerable. This issue did not affect the versions of kdelibs as shipped with Red Hat Enterprise Linux 5 and 6.
CVSS v2 metrics
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Red Hat security errata
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