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A recently reported potential buffer overflow issue in QXmlStreamReader has been assigned the CVE id CVE-2023-38197.
QXmlStreamReader can freeze or get out of memory on recursive entity expansion, with DTD tokens in XML body.
Solution: Apply the attached patch or update to Qt 5.15.15, Qt 6.2.10, or Qt 6.5.3. Note that the previous security advisory patch for QXmlStreamReader needs to be applied previously in addition before applying this one.
Qt 6.5: https://codereview.qt-project.org/c/qt/qtbase/+/490550 or https://download.qt.io/official_releases/qt/6.5/CVE-2023-38197-qtbase-6.5.diff
Qt 6.2: https://download.qt.io/official_releases/qt/6.2/CVE-2023-38197-qtbase-6.2.diff
Qt 5.15: https://download.qt.io/official_releases/qt/5.15/CVE-2023-38197-qtbase-5.15.diff
Download the latest release here: www.qt.io/download.
Qt 6.6. is a feature release with focus on improving UX capabilities including responsive UI technology and the Qt Graph module.
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