WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Security Fix: * webkitgtk: use-after-free issue leading to arbitrary code execution * webkitgtk: memory corruption issue leading to arbitrary code execution * webkitgtk: memory corruption issue leading to arbitrary code execution * webkitgtk: buffer overflow issue was addressed with improved memory handling * webkitgtk: out-of-bounds write issue was addressed with improved bounds checking * webkitgtk: correctness issue in the JIT was addressed with improved checks * webkitgtk: issue was addressed with improved UI handling * webkitgtk: type confusion issue leading to arbitrary code execution * webkitgtk: sensitive information disclosure issue * webkitgtk: memory disclosure issue was addressed with improved memory handling * webkitgtk: memory corruption issue leading to arbitrary code execution * webkitgtk: use-after-free issue leading to arbitrary code execution * webkitgtk: memory corruption issue leading to arbitrary code execution * webkitgtk: Same Origin Policy bypass issue * webkitgtk: logic issue leading to user information disclosure * webkitgtk: memory corruption issue leading to arbitrary code execution * webkitgtk: memory corruption issue leading to arbitrary code execution * webkitgtk: heap-use-after-free in WebCore::RenderLayer::addChild * webkitgtk: heap-use-after-free in WebCore::RenderLayer::renderer * webkitgtk: heap-use-after-free in WebCore::RenderLayer::setNextSibling * webkitgtk: heap-use-after-free in WebCore::RenderLayer::repaintBlockSelectionGaps * webkitgtk: heap-use-after-free in WebCore::RenderLayer::updateDescendantDependentFlags For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.8 Release Notes linked from the References section.