The vulnerability in the `WebCore::RenderLayer::addChild` function of the WPE WebKit and WebKitGTK rendering modules allows a attacker to execute arbitrary code.

The vulnerability of the WebCore::RenderLayer::addChild function in WPE WebKit and WebKitGTK rendering modules is related to the use of memory after it is freed. Exploiting this vulnerability could allow a remote attacker to execute arbitrary code...